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through the wire. In a tangent galvanometer, a current of 1A produces a deflection of 30°. Find the current required to produce a deflection of 60°. 6. A solenoid is 2m long and 3 cm in diameter. It has 5 layers of windings of 1000 turns each and carries a current of 5A. Find the magnetic induction at its centre along its axis. 7. An α-particle moves with a speed of 5 x 105 ms-1 at an angle of 30° with respect to a magnetic field of induction 10-4 T. Find the force on the particle. [α particle has a +ve charge of 2e]. 8. A uniform magnetic field of induction 0.5 T acts perpendicular to the plane of the Dees of a cyclotron. Calculate the frequency of the oscillator to acceerate protons. (mass of proton = 1.67 x 10-27 Kg) 9. A uniform magnetic field 0.5 T is applied normal to the plane of the Dees of a Cyclotron. Calculate the period of the alternating potential to be applied to the Dees to accelerate deutrons (mass of deuteron = 3.3 x 10-27 kg and its charge = 1.6 x 10-19 C) 10. A conductor of length 50 cm carrying a current of 5A is placed perpendicular to a magnetic field of induction 2 x10-3 T. Find the force of the conductor. 11. A galvanometer has a resistance of 100 Ω. A shunt resistance 1 Ω is connected across it. What part of the total current flows through the galvanometer? 12. A galvanometer has a resistance of 40 Ω. It shows full scale deflection for a current of 2 mA. How you will convert the galvanometer into a voltmeter of range 0 to 20 V? 5.

PART III (5 marks) 1. 2. 3. 4. 5.

state and explain the Biot-Savart rule. Magnetic Lorentz force Convertion of galvanometer into Ammeter and Voltmeter Derive an expression for the magnetic moment of current loop Derive an expression for magnetic dipole moment of a revolving electron.

PART III Problems - (5 Marks) 1.

2.

10 |

A current of 4A flows through 5 turn coil of a tangent galvanometer having a diameter of 30 cm. If the horizontal component of Earth’s magnetic induction is 4 × 10-5 T, find the deflection produced in the coil A, B and C are three parallel conductors each of length 10 m, carrying currents as shown in the figure. Find the magnitude and direction of the resultant force on the conductor B.

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3.

A rectangular coil of area 20 cm × 10 cm with 100 turns of wire is suspended in a radial magnetic field of induction 5 × 10-3 T. If the galvanometer shows an angular deflection of 150 for a current of 1mA, find the torsional constant of the suspension wire.

4.

A galvanometer with 50 divisions on the scale has a current sensitivity of 0.1 m A / division. The resistance of the galvanometer is 40ohm. If a shunt resistance 0.1 ohm is connected across it, find the maximum value of the current that can be measured using this ammeter.

5.

Three tangent galvanometers have turns ratio of 2:3:5. When connected in series in a circuit, they show deflections of 30o, 45o and 60o respectively. Find the ratio of their radii.

PART IV- (10 Marks) 1.

Joules law – verification

2.

Magnetic field due to current carrying conductor

3.

Field along the axis of coil

4.

Explain tin detail the principle, construction and the theory of Cyclotron

5.

Motion of charged particles in an uniform field. Force acting on a current carrying conductor suspended in a field Explain tin detail the principle, construction and the theory of moving coil galvanometer.

6. 7.

4.ELECTROMAGNETIC INDUCTION AND ALTERNATING CURRENT BLUE PRINT Part I

Part II Part III

Part IV

Total

4

2

1

25

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PART II - (3 Marks) 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25.

26.

Define magnetic flux. What is electromagnetic induction? State Lenz’s law. State Fleming’s right hand rule. Define self induction. Define self inductance or coefficient of self induction. Define the unit of self inductance. Define mutual induction. Define coefficient of mutual induction or mutual inductance. State the methods of producing induced emf. What is polyphase alternator? What is eddy current? Mention the difference between a step up and step down transformer. Define efficiency of a transformer. Define alternating current and give its expression. Define rms value of a.c. What is inductive reactance? What is capacitive reactance? A capacitor blocks d.c. but allows a.c. Explain. What is resonant frequency in LCR circuit? Draw impedance diagram of LCR circuit. Draw frequency response curve of RLC circuit. Why is RLC series resonant circuit called as acceptor circuit? Define quality factor. What happens to the value of current in RLC series circuit, if frequency of the source is increased? Define power factor.

5.

6.

1. 2. 3. 4. 5. 6. 7.

1.

2.

3.

27. What is choke coil?

PROBLEMS ( 3 MARKS) 1.

2.

3.

4.

Magnetic field through a coil having 200 turns and cross sectional area 0.04 m2 changes from 0.1 wb m-2 to 0.04 wb m-2 in 0.02 s. Find the induced emf. An aircraft having a wingspan of 20.48 m flies due north at a speed of 40 ms -1. If the vertical component of earth’s magnetic field at the place is 2 x 10-5 T, Calculate the emf induced between the ends of the wings. Two rails of a railway track insulated from each other and the ground are connected to a millivoltmeter. The train runs at a speed of 180 Km/hr. Vertical component of earth’s magnetic field is 0.2 x 10-4 Wb/m2 and the rails are separated by 1 m. Find the reading of the voltmeter. Calculate the mutual inductance between two

4.

5.

6.

7.

coils when a current of 4 A changing to 8 A in 0.5 s in one coil, induces an emf of 50 mV in the other coil. An a.c. generator consists of a coil of 10,000 turns and of area 100 cm2. The coil rotates at an angular speed of 140 rpm in a uniform magnetic field of 3.6 x 10-2T. Find the maximum value of the emf induced. Write the equation of a 25 cycle current sine wave having rms value of 30 A. PART – III (5 marks) State Faraday’s laws and Lenz’s law of electromagnetic induction. Discuss the various power losses of a transformer. How are they are minimised? Obtain an expression for the self inductance of a long solenoid. Obtain an expression for the mutual inductance between a pair of coils. Derive an expression to the energy associated with an inductor. Discuss the applications of eddy current. Explain how an emf can be induced by changing area enclosed by the coil. PROBLEMS (5 marks) A coil is connected across 250 V, 50 Hz power supply and it draws a current of 2.5 A and consumes power of 400 W. Find the self inductance and power factor. An AC voltage represented by e = 310 sin 314 t is connected in series to a 24 Ω resistor,H inductor and a 25 μF capacitor. Find the value of the peak voltage, rms voltage, frequency, reactance of the circuit, impedance of the circuit and phase angle of the current. A resistance of 50 Ω, an inductance of 0.5 H and a capacitance of 5 μF are connected inseries with an a.c. supply of e = 311 sin (314t). Find (i) frequency of a.c. supply(ii) maximum voltage (iii) inductive reactance (iv) capacitive reactance (v) impedance. Air core solenoid having a diameter of 4 cm and length 60 cm is wound with 4000 turns. If a current of 5A flows in the solenoid, calculate the energy stored in the solenoid. A solenoid of length 1 m and 0.05 m diameter has 500 turns. If a current of 2A passesthrough the coil, calculate (i) the coefficient of self induction of the coil and (ii) the magnetic flux linked with a the coil. A coil of 100 turns and resistance 100 Ω is connected in series with a galvanometer of resistance 100 Ω and the coil is placed in a magnetic field. If the magnetic flux linked with the coil changes from 10-3 Wb to 2 x 10-4 Wb in a time of 0.1s, calculate the induced emf and current. An iron cylinder 5cm in diameter and 100 cm long is wound with 3000 turns in a single

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8.

1. 2. 3. 4.

5. 6.

layer. The second layer of 100 turns of much finer wire is wound over the first layer near its centre. Calculate the mutual inductance between the coils (relative permeability of the core = 500). The primary of a transformer has 400 turns while the secondary has 2000 turns. If the power output from the secondary at 1100 V is 12.1 KW, calculate the primary voltage. If the resistance of primary is 0.2 Ω and that of secondary is 2 Ω and the efficiency of the transformer is 90% calculate (i) heat loss in the primary coil (ii) heat loss in the secondary coil PART IV – (10 marks) Single phase ac generator. Describe the principle, construction and working of Transformer LCR circuit Discuss with theory the method of inducing emf in a coil by changing its orientation with respect to the direction of the magnetic field. AC circuit with inductance alone. What are eddy current? Explain their application. How are they minimised.

5.ELECTROMAGNETIC WAVES AND WAVE OPTICS BLUE PRINT Part I

Part II

Part III

Part IV

Total

4

2

1

1

25

PART II - (3 Marks) 1. 2. 3. 4. 5.

What are electromagnetic waves? What are the uses of radio waves? What are the uses of microwaves? What are the uses of infrared rays? What are the uses of ultraviolet radiations?

6.

What are the uses of X-rays?

7.

What are the uses of gamma rays?

8.

What is emission spectrum?

9.

What is an absorption spectrum?

17. Why does the sky appear blue? 18. Why does sun appear reddish at sunrise and sunset? 19. What is Tyndal scattering? 20. What is Raman effect? 21. What are Stokes and Anti- stoke’s lines? 22. What are the applications of Raman effect? 23. Define Wave front. 24. State Huygen’s principle. 25. What are the conditions for total internal reflection? 26. What are the coherent sources? 27. What is interference of light? 28. What are the conditions for sustained interference? 29. What are the conditions for obtaining clear and broad interference bands? 30. What are Newton’s rings? 31. Why is the centre of Newton’s ring system dark? 32. Define diffraction. 33. Diffraction is more pronounced in sound than in light. Explain why? 34. Distinguish between Fresnel and Fraunhofer diffraction. 35. What is diffraction grating? 36. What is grating element? What are corresponding points? 37. What is polarisation? 38. What are plane of polarisation and plane of vibration? 39. What are polariser and analyser? 40. Define polarising angle? 41. State Brewster’s law. 42. What is double refraction? 43. Define optic axis. 44. What are uniaxial and biaxial crystals? Give examples. 45. What is optical activity? 46. On what factors does the optical rotation depend? 47. Define specific rotation.

PROBLEMS ( 3 MARKS) 1.

10. What are Fraunhofer lines? 11. What is fluorescence? 12. What is phosphorescence? 13. What are the two modes of propagation of energy? 14. What are the failures of corpuscular theory? 15. Distinguish corpuscle and photon. 16. State Rayleigh’s scattering law.

2.

In Young’s experiment, the width of the fringes obtained with light of wavelength 6000 Å is 2mm. Calculate the fringe width if the entire apparatus is immersed in a liquid of refractive index 1.33. The fringe width obtained in Young’s double slit experiment while using a light of wavelength 5000Å is 0.6 cm. If the distance between the slit and the screen is halved, find


3.

4.

5.

6.

7.

8.

the new fringe width. A light of wavelength 6000 Å falls normally on a thin air film, 6 dark fringes are seen between two points. Calculate the thickness of the air film. A plano - convex lens of radius 3 m is placed on an optically flat glass plate and is illuminated by monochromatic light. The radius of the 8th dark ring is 3.6 mm. Calculate the wavelength of light used. In Newton’s rings experiment the diameter of certain order of dark ring is measured to be double that of second ring. What is the order of the ring? Two slits 0.3 mm apart are illuminated by light of wavelength 4500 Å. The screen is placed at 1 m distance from the slits. Find the separation between the second bright fringe on both sides of the central maximum. A parallel beam of monochromatic light is allowed to incident normally on a plane transmission grating having 5000 lines per centimetre. A second order spectral line is found to be diffracted at an angle 30°. Find the wavelength of the light. The refractive index of the medium is √3 . Calculate the angle of refraction if the unpolarised light is incident on it at the polarising angle of the medium.

4.

5.

6.

7.

8.

9.

PART – III (5 marks) 1. 2. 3. 4. 5. 6.

1.

2.

3.

What are Rafraunhofer lines . explain. Explain Newton’s corpuscular theory of light. Describe pile of plates. 4. Write a note on nicol prism Derive Brewster’s law. Huygens method to construct a new wave front. PROBLEMS (5 marks) An LC resonant circuit contains a capacitor 400 pF and an inductor 100 μH. It is sent into oscillations coupled to an antenna. Calculate the wavelength of the radiated electromagnetic wave. In Young’s double slit experiment, the intensity ratio of two coherent sources are 81 : 1. Calculate the ratio between maximum and minimum intensities. In a Newton’s rings experiment the diameter of the 20th dark ring was found to be 5.82 mm and that of the 10th ring 3.36 mm. If the radius of the plano−convex lens is 1 m. Calculate the wavelength of light used.

A plano – convex lens of radius 3 m is placed on an optically flat glass plate and is illuminated by monochromatic light. The radius of the 8th dark ring is 3.6 mm. Calculate the wavelength of light used A soap film of refractive index 4/3 and of thickness 1.5 x 10-4 cm is illuminated by white light incident at an angle 60o. The reflected light is examined by a spectroscope in which dark band corresponds to a wavelength of 5000Å. Calculate the order of the dark band. A soap film of refractive index 1.33, is illuminated by white light incident at an angle 30o. The reflected light is examined by spectroscope in which dark band corresponding to the wavelength 6000Å is found. Calculate the smallest thickness of the film. A monochromatic light of wavelength 589 nm is incident on a water surface having refractive index 1.33. Find the velocity frequency and wavelength of light in water. A plane transmission grating has 5000 lines / cm. Calculate the angular separation in second order spectrum of red line 7070Å and blue line 5000Å. In Young’s experiment a light of frequency 6 x 1014 Hz is used. Distance between the centres of adjacent fringes is 0.75 mm. Calculate the distance between the slits, if the screen is 1.5 m away.

PART – IV 1. 2. 3. 4. 5.

Discuss the theory of plane transmission grating. Derive an expression to interference band width in young’s double slit. Experiment and proof. Describe the total internal reflection of a plane wave front. Discuss the theory of interference in thin transparent film due to reflected light. Derive an expression to the radius of Newton’s nth dark ring. Using it determine the i) Wavelength of light and ii. refractive index of the liquid.

6.ATOMIC PHYSICS BLUE PRINT Part I

Part II

Part III

Part IV

Total

4

2

1

1

25

PART II - (3 Marks) 1.

What are cathode rays?


2.

What are positive rays or canal rays?

6.

3.

What is the principle of Millikan’s oil drop experiment?

4.

What are the drawbacks of Thomson’s atom model?

5.

What is meant by energy level diagram?

6.

Define excitation potential energy.

7.

Define ionisation potential energy.

8.

Define critical potential of an atom.

9.

What is known as fine structure of spectral lines?

10. What are stark effect and Zeeman effect? 11. What are X-rays? 12. What are soft X-rays? 13. What are hard X-rays? 14. How are X-rays detected? 15. Why ordinary plane transmission gratings can not be used to produce diffraction effects in X-rays?

1. 2. 3.

Describe the properties of x rays Describe Laue experiment an x ray diffraction. Derive an expression to the energy of nth orbit of an atom. 4. Describe the spectral series of hydrogen atom. 5. Distinguish soft rays from hard x rays. 6. State and Derive Bragg’s law. 7. Describe the origin of characteristics x rays. 8. Describe industries applications and medical application of Laser light. 9. Describe Scientific and Engineering applications of X rays. 10. 10.Write any five properties of cathode rays. 11. Write the properties of ∝ rays. 12. Obtain the equarion 2 d sinθ = nλ in X –ray diffraction. PROBLEMS (5 marks) 1.

16. State Bragg’s law. 17. State Moseley’s law. 18. What are the characteristics of laser? 19. What is meant by normal population?

2.

20. What is meant by population inversion? 21. Write the differences between spontaneous emission and stimulated emission. 22. What are the conditions to achieve laser action? 23. How does the laser light differ from ordinary light?

3.

24. What is holography? 4.

25. Explain the term MASER.

PROBLEMS ( 3 MARKS) 1.

2. 3.

4.

5.

14 |

A beam of electrons moving with a uniform speed of 4 x 107 ms-1 is projected normal to the uniform magnetic field where B = 1 x 10-3 Wb/ m2. What is the path of the beam in magnetic field? Calculate the longest wavelength that can be analysed by a rock salt crystal of spacing d = 2.82Å in the first order. An X-ray diffraction of a crystal gave the closest line at an angle of 6°271. If the wavelength of X-ray is 0.58 Å, find the distance between the two cleavage planes. How much should be the voltage of an X-ray tube so that the electrons emitted from the cathode may give an X-ray of wavelength 1Å after striking the target. Calculate the mass of an electron from the known values of specific charge and charge of electron.

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Find the minimum wavelength of X-rays produced by an X-ray tube at 1000 kV. PART III (5 marks)

5.

6.

7.

In Millikan’s experiment, an oil drop of mass 4.9 x 10-14 kg is balanced by applying a potential difference of 2 kV between the two plates which are 8 mm apart. Calculate the number of elementary charges on the drop. Take g = 10 ms-2. In Thomson’s experiment for the measurement of ( e/m)of an electron, the beam remains undeflected, when the electric field is E = 105 V/m and the magnetic field is B = 10−2 tesla. The beam was originally accelerated through a potential difference of 285 volt. Calculate the value of the specific charge (e/ m)of the electron. Wavelength of Balmer first line is 6563Å. Calculate the wavelength of second line. Calculate the distance of closest approach of α– particles to the copper nucleus when α– particles of 5 MeV are scattered back by a thin sheet of copper (Z for copper = 29). Hydrogen atom in its ground state is excited by means of a monochromatic radiation of wavelength 970.6 Å. How many different transitions are possible in the resulting emission spectrum? Find the longest wavelength amongst these. (Ionisation energy of hydrogen atom in its ground state is 13.6 eV and take h = 6.6 × 10–34 Js) In Bragg’s spectrometer, the glancing angle for first order spectrum was observed to be 8o. Calculate the wavelength of X-ray, if d = 2.82 x 10-10 m. At what angle will be second maximum occur? For the Paschen series, calculate the wavelength of the first member and the series limit. Given R, Rydberg constant = 1.094 x107 m-1.

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On the basis of Bohr’s theory, calculate the velocity and time period of revolution of the electron in the innermost orbit (n=1) of the hydrogen atom. Given : Bohr’s Radius (r1) = 0.53Å. PART – IV (10 marks) 1. Millikan’s experiment to determine the charge of an electron. 2. State the Bohr’s postulates and hence derive an expression to the radius of nth orbit of anatom. 3. Ruby laser. 4. He -Ne laser. 5. Thomson’s experiment to find e/m. 6. Drive Bragg’s law. Explain how a Bragg’s spectrometer can be used to determine wavelength of X – rays?

8.

4. 5. 6.

7.

8.

9.

7.DUAL NATURE OF RADIATION AND MATTER AND RELATIVITY

Find the accelerating potential of the electron, when its de Broglie wavelength is 1Å. At what speed is a particle moving if the mass is equal to three times its rest mass? The rest mass of an electron is 9.1 x10-31 kg. What will be its mass if it moves with 4/5th of the speed of light? For an observer imagined to be moving at a speed of 36 x 106 km/hr, length of the rod measures 1 m. Find the length of the rod as measured by a stationary observer. The time interval measured by an observer at rest is 2.5 x 10 -8 s. What is the time interval as measured by an observer moving with a velocity v = 0.73 c. Calculate the rest energy of an electron in MeV (mass of an electron is 9.11 x 10 -31 kg)

PART – III (5 marks) 1.

BLUE PRINT Part I Part II Part III Part IV 2

1

2

-

Total 15

PART II - (3 Marks) 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15.

What is photoelectric effect? Define stopping potential. Define threshold frequency. Define work function. What are photo-cells? What are matter waves? Why X-rays inspite of having shorter wavelength cannot be used in microscope? What are the uses of electron microscope? What is the limitation of electron microscope? Define frame of reference. What is inertial frame of reference? What is non-inertial frame of reference? What are the postulates of the special theory of relativity? Give an example for mass-energy equivalence. If a body moves with the velocity of light, what will be its mass? Comment on your

Describe an experiment to the show the effect of frequency of incident radiation on stopping potential. 2. Describe the experiment to show the effect of potential difference on the photo electric current. 3. State the laws of photo electric emission. 4. Derive Einstein’s photo electric equation. 5. Derive an expression to the de Broglie’s wavelength associated with accelerated electrons. 6. Explain the wave mechanical concept of an atom. 7. Write a note on time dilation. 8. Derive Einstein’s mass energy relation. 9. Explain the wave mechanical concept of an atom. 10. Write the applications of photo electric cells. 11. Derive an expression for de Broglie wavelength of matter waves.

PROBLEMS (5 marks) 1. 2.

result. PROBLEMS ( 3 MARKS) 1.

2.

3.

The work function of zinc is 6.8 x 10-19 J. What is the threshold frequency for emission of photoelectrons from zinc. Calculate the de Broglie wavelength of an electron, if the speed is 105 ms-1. (Given m = 9.1x 10 -31 kg; h = 6.626 x 10-34 Js) What is the de Broglie wavelength of an electron of kinetic energy 120 eV?

3.

4.

5.

At what speed is a particle moving if the mass is equal to three times its rest mass. The photoelectric threshold wavelength of a metal is 5000 Å. Find (i) the work function in electron volts and (ii) the kinetic energy of the photoelectrons in electron volts, ejected by the light of wavelength 4000 Å. A metallic surface when illuminated with light of wavelength 3333 Å emits electrons with energies upto 0.6 eV. Calculate the work function of the metal. The time interval measured by an observer at rest is 2.5 × 10−8s. What is the time interval as measured by an observer moving with a velocity v = 0.73 c. How fast would a rocket have to go relative

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6.

7.

8.

9.

to an observer for its length to be corrected to 99% of its length at rest? Red light of wavelength 670 nm produces photoelectrons from a certain metal which requires a stopping potential of 0.5 V. What is the work function and threshold wavelength of the metal? The work function of Iron is 4.7 eV. Calculate the cut off frequency and the corresponding cut off wavelength for this metal. For an observer imagined to be moving at a speed of 36 x 106 km/hr, length of the rod measures 1m. Find the length of the rod as measured by a stationary observer. In the Bohr model of hydrogen atom, what is the de Broglie wave length λ for the electron when it is in the (i) n = 1 level and (ii) n = 4 level. In each case, compare the de Broglie wave length to the circumference of the orbit.

8 - NUCLEAR PHYSICS

reactions? 21. Define critical size. 22. What is the function of moderator in a nuclear reactor? 23. What are breeder reactors? 24. What are the uses of nuclear reactors? 25. What are thermonuclear reactions? 26. What are cosmic rays? 27. What are primary cosmic rays? What are its constituents? 28. What are secondary cosmic rays? What are its constituents? 29. What are latitude and altitude effects of cosmic rays? 30. What is meant by pair production and annihilation of matter? 31. What are leptons? 32. What are mesons? 33. What are baryons?

BLUE PRINT

PROBLEMS ( 3 MARKS)

Part I

Part II

Part III

Part IV

Total

4

2

1

1

25

PART II - (3 Marks) 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20.

What are isotopes? Give examples. What are isobars and isotones? Show that nuclear density is almost a constant for all the nuclei. Define atomic mass unit. Define mass defect and binding energy. What is nuclear force? What are the characteristics of nuclear forces? Define radioactivity. State the radioactive law of disintegration. Define half life period. Define mean life. What is activity of a radioactive substance? Define curie. How do you classify neutrons in terms of its kinetic energy? What do you mean by artificial radioactivity? What are the precautions to be taken for those who are working in radiation laboratories? What is artificial trasmutation? What is nuclear fission? Define chain reaction. What are controlled and uncontrolled chain

1.

2. 3.

4.

5.

6.

7. 8.

9.

The half life of 84Po218 is 3 minute. What percentage of the sample has decayed in 15 minutes? Calculate the radius of 13Al27 nucleus Tritium has a half life of 12.5 years. What fraction of the sample will be left over after 25 years? The disintegration constant λ of a radioactive element is 0.00231 per day. Calculate its half life and mean life. A reactor is developing energy at the rate of 32 MW. Calculate the required number of fissions per second of 92U235. Assume that energy per fission is 200 MeV. The redioactive isotope 84Po214 undergoes a successive disintegration of two a decays and two β-decays. Find the atomic number and mass number of the resulting isotope. The half life of radon is 3.8 days. Calculate its mean life If 50% of a radioactive sample decays in 5 days, how much of the original sample will be left over after 20 days? The isotope 92U238 successfully undergoes three α- decays and two β-decays. What is the resulting isotope?

PART III (5 marks) 1. Write a note on the biological hazards of nuclear radiations.


2. Derive the relative between an half life and mean life. Discovery of neutron. 3. What are the results obtained in binding energy curve? 4. Properties of nuclear forces. 5. Radioactive displacement law. 6. Properties of neutron. 7. Atom Bomb. 8. Describe the properties of Cosmic rays. 9. Describe the properties of α rays. 10. Explain soddy-Fajan’s radioactive displacement laws.

→ 88Ra224* + α Ra224* → 88Ra224 + γ (217 keV)

88

PART IV (10 marks) 1.

Derive the relation N = No-λt.Derive an expression for half-life.

2.

Describe the principle, working of GM counter.

3.

Describe the construction and working of Bainbridge spectrometer.

4.

Describe the components of nuclear reactor.

5.

What are cosmic rays? Explain i. latitude effect ii. Altitude effect of cosmic rays

PROBLEM (5 marks) 1.

2.

The binding energy per nucleon for 6C12 nucleus is 7.68 MeV and thatt for 6C13 is 7.47 MeV. Calculate the energy required to remove a neutron from 6C13 nucleus. Determine the amount of Po210 required to provide a source of α particles of activity 5 milli curie. Given T½ of polonium is 138 days.

3.

Calculate the energy released in the reaction 13Al27 + 1H2 → 12Mg25 + 2He4

4.

5.

6.

7.

8.

construction

and

9 - SEMICONDUCTOR DEVICES AND THEIR APPLICATIONS BLUE PRINT Part I Part II Part III

Part IV Total

3

1

4

1

30

PART II - (3 Marks) 1.

What are energy band in solids?

Calculate the mass of coal required to produce the same energy as that produced by the fission of 1 kg of U235. Given : heat of combustion of coal = 33.6 x 106 J/kg, ton = 1000 kg. Energy per fission of U235 = 200 MeV. 1 eV = 1.6 x 1019 J. Avagadro number N = 6.023 x 1023

2.

Define valence band, conduction bond and forbidden energy gap.

3.

What do you understand by intrinsic and extrinsic semiconductor?

4.

What are the different methods of doping a semiconductor?

A piece of bone from an archaeological site is found to give a count rate of 15 counts per minute. A similar sample of fresh bone gives a count rate of 19 counts per minute. Calculate the age of the specimen. Given : T1/2 = 5570 years.

5.

What are N-type and P-type semiconductors?

6.

What is rectification?

7.

What are the advantages of bridge rectifier?

8.

What is meant by Avalanche breakdown?

9.

What is meant by Zener breakdown?

226

Show that the mass of radium (88Ra ) with an activity of 1 curie is almost a gram.Given T1/2 = 1600 years ; 1 curie = 3.7 x 1010 disintegrations per second. Singly ionized magnesium atoms enter into the velocity selector of a Bainbridge mass spectrograph having electric and magnetic fields 30 kV/m and 0.1 tesla respectively. Calculate the radii of the path followed by the three isotopes of mass numbers 24, 25 and 26 when the deflecting magnetic field is 0.5 tesla. Mass of a nucleon = 1.67 x 10-27 kg ; Charge of the ion, e = 1.6 x 10- 19 C. Thorium (90Th228) emits an α−particle to reduce to 88Ra224. Calculate the kinetic energy of the α− particle emitted in the following decay. 90Th228

10. What are the biasing rules for the normal working of a transistor? 11. Draw the common base NPN transistor circuit. 12. Draw the common emitter NPN transistor circuit. 13. Draw the common transistor circuit.

collector

NPN

14. What is operating point of an amplifier? 15. Why CE configuration is preferred over CB configuration for operating transistor as a amplifier? 16. What is meant by transistor biasing? 17. What are lower cut-off and upper cut-off frequencies?


18. Define bandwidth of an amplifier.

4.

Voltage divider bias. 4. deMorgan’s theorem.

19. What is meant by feedback? Name the two types of feedback.

5.

Derive an expression for voltage gain of an amplifier with negative feedback.

20. What are the advantages of negative feedback?

6.

Explain P type semiconductor.

21. What is an oscillator?

PROBLEM (5 marks)

22. Give the Barkhausen criteria for oscillations.

1.

The current gain β of the silicon transistor used in the circuit as shown in figure .(Barrier potential for silicon is 0.69 V) Find (i) IB (ii) IE (iii) IC and (iv) VCE

2.

Find the output of the circuit given below

3.

Construct a logic circuit using NAND gates only for Y = A + (BC) Find the output F of the logic circuit given below:

23. What is an integrated circuit? 24. What are the advantages of integrated circuit (IC) over discrete components? 25. Differentiate between linear ICs and digital ICs. 26. Draw diode equivalent circuit for OR gate. 27. Draw diode equivalent circuit for AND gate. 28. Draw transistor equivalent circuit for NOT gate. 29. What is an EXOR gate? Give the Boolean expression for the EXOR operation. 30. State De-Morgan’s theorems. 31. What are universal gates? Why are they called so? 32. What are the important characteristics of operational amplifier? (OR) Give the important parameters of an operation amplifier.

PROBLEMS ( 3 MARKS) 1. The base current of a transistor is 50 µA and collector current is 25 µA. Determine the values of β and α. 2. Find the voltage at the point B in the figure (Silicon diode is used)

4.

3. The gain of the amplifier is 100. If 5% of the output voltage is fed back into the input through a negative feedback network find out the voltage gain after feedback. 4. When the negative feedback is applied to an amplifer of gain 50, the gain after feedback falls to 25. Calculate the feedback ratio. 5.

PART – IV (10 marks)

Prove the Boolean identity : (A + B) (A + C) = A + BC

1.

6. The output of two NOT gates are NORed, as shown in figure, What is this combination equivalent to?

Explain the action of an operational amplifier as difference amplifier.

2.

Explain the construction and working of a multimeter?

3.

Bridge rectifier

4.

Colpitt’s oscillator

5.

Static characteristics of CE transistor circuit

6.

Describe the types of feedback and hence derive feed back gain

7.

Explain the output characteristics of an NPN transistor connected in common emitter

7.

Prove the following logic expression using the laws and theorems of Boolean algebra.

8. Simplify the following logic expression using the laws and theorems of Boolean algebra. Y = AB + AB + BC + CA. PART – III (5 marks) 1.

Half wave rectifier transistor acting as switch

2.

Zener diode as a voltage regulator OR gate

3.

Explain how multimeter is used a as ohmmeter.

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configuration with the help of a neat circuit diagram.

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10 - COMMUNICATION SYSTEMS

2. An FM signal has a resting frequency of 105 MHz and highest frequency of 105.03 MHz when modulated by a signal. Determine (i) frequency deviation and (ii) carrier swing.

BLUE PRINT Part I

Part II

Part III

Part IV

Total

2

1

1

1

20

PART III - (5 Marks) 1. Explain the wave propagation in ionosphere. What are the limitations of amplitude modulation?

PART II - (3 Marks) 1. What are the different types of radio wave propagation? 2. What is meant by skip distance?

2. What are the applications of radar? How is the flicker effect removed in interlaced scanning? 3. Explain the principle of modem. Explain the function of FM transmitter with neat block diagram.

3. What is meant by skip zone? 4. What is the necessity of modulation? 5. What is modulation?

PROBLEMS ( 5 MARKS)

6. What is amplitude modulation? 7. What is modulation factor? 8. Define bandwidth and channel width in amplitude modulation. 9. What are the advantages of amplitude modulation? 10. What are the disadvantages of amplitude modulation?

1. In a broadcasting studio, a 1000 kHz carrier is modulated by an audio signal of frequency range, 100−5000 Hz. Find (i) maximum and minimum frequencies of USB (ii) maximum and minimum frequencies of LSB and (iii) width of the channel. PART IV - (10 Marks)

11. What is frequency modulation? 12. What are the modulation?

advantages

of

frequency

13. What are the disadvantages of frequency modulation? 15. What is meant by scanning?

4. With the help of a block diagram, explain the function of a RADAR system

16. What is interlaced scanning? 17. Give any three applications of radar. shortcomings

of

analog

19 What are the advantages of digital commu nication? 20.

What are the communication?

disadvantages

2. Explain the function of vidicon camera tube. 3. Describe monochrome TV receiver with an elementary block diagram.

14. What is phase modulation?

18. What are the communication?

1. With the help of a functional block diagram explain the operation of super heterodyne AM receiver.

of

digital

21. What is modem? 22. What are the different types of wire and cable used for telecommunication system? 23. What are the advantages of fiber optical communication? 24. Give any three merits of satellite commu nication.

5. Make an analysis of amplitude modulated wave. Plot the frequency spectrum.

TIME MANAGEMENT 1. Part I 2. Part II 3. Part III 4. Part IV 5.Revision TOTAL

------------------------------------------

25 minutes 45 minutes 45 minutes 50 minutes 15 minutes 180 MINUTES



25. What are the demerits of satellite communi cation?

PROBLEMS ( 3 MARKS) 1. A 10 MHz sinusoidal carrier wave of amplitude 10 mV is modulated by a 5 kHz sinusoidal audio signal wave of amplitude 6 mV. Find the frequency components of the resultant modulated wave and their amplitude.

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COMMERCE

BLUE PRINT Topics

Knowledge

Chapters

E

1. Organisation

VSA

O

E

1

1

1

1

2

1

2. Sole Trader 3.partnership

1

Understanding

SA

1

1

3

1

1

2

5.Company – II

1

2

6. Stock Exchange

1

2

4.Company – I

SA

Applications

VSA

O

1

2

E

1

2

1

3

1

1

1

2

1

1

VSA

Total O

Marks 39

1

1

SA

1

1

2

1

27 2

43

2

51

2

42

2

42

7. Co-operative societies

1

1

2

1

1

1

1

40

8. Govt. in Business

1

1

1

1

1

2

1

40

Total

3

7

15

5

6

15

10

324

3

4

1

2

E – Essays, SA – Short Answers (paragraph), VSA – Very short Answers, O –Objectives Part – B (10/15)

Total-marks: 10 x 4 = 40

Lesson 1 – Organisation

2x4=8

1. Who is a KARTA? 2. State the meaning of Board Organization. 3. Explain the term “partnership”. 4. What is unity of Command? 5. What is meant by Delegation of Authority? 6. What is sole trading business? 7. What is public organization? 8. What do you understand by co-operation?

Lesson 2- Sole Trader

1x4=4

1. What is a sole proprietorship business? 2. Define “sole trader” 3. What is unlimited liability?

Lesson 3 –Partnership

1. Define Partnership. 2. What is limited Partnership? 3. What is relationship that exists among partners? 4. Who is a dormant partner? 5. Define implied authority of a partner. 6. Who is a minor? Can a minor become a partner?

Lesson 4 – Joint Stock Companies – I

2x4=8

2x4=8

1. What do you mean by a Government company? 2. Define Private limited company? 3. Define debentures. 4. What is share premium? 5. For what reasons are shares forfeited? 6. What are Redeemable preference shares? 7. Mention documents to be filed with Registrar for getting certificate of incorporation. 8. What is meant by perpetual succession? 9. What do you mean by a foreign company? 10. What is meant by Reissue of Forfeited Shares? 11. What do you mean by issue of shares at a discount? 12. what is significance of the common seal of the company?

Lesson 5 – Joint Stock Companies –II

2x4=8

1. What is a Statutory Meeting? 2. When is Extraordinary General Meeting convened. 3. What is agenda? 4. Who is an alternate director? 5. What is meant by resolutions requiring special notice? 6. Is there any special qualification prescribed for a company director? 7. What do you mean by poll? 8.How is the voting righting in a company exercised?

Lesson 6 – Stock Exchange 1. What is listing? 2.What are the advantages of listing? 3. What do you mean by public issues? 4. What is prospectus? 5. What is security? 6. What are the limitations of stock exchange? 7. What is the difference between speculation and Gambling? 20 |

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2x4=8


8. What do you mean by ready delivery contracts? 9. What is share application? 10. Who is an investor? 11. What is ‘underwriting’? 12. What is minimum subscription? 13. What is share allotment? 14. Who is broker? 15. Define mutual funds? 16. Who is called a “Lame duck’? 17. What is OTCEI? 18. What are the achievements of BOLT?

Lesson 7- Co-operatives

2x4=8

1. who are Rochdale pioneers? 2. What are aims of co – operative organization? 3. What is Patronage of dividend? 4.Mention any four features of co-operative society 5. What does the word mean co-operation? 6. Explain the meaning of consumer co-operatives? 7. What are the aims of co – operative societies? 8. Define co – operative super market? 9. What is agricultural credit society? 10. What is the significance of ‘Self Help and Mutual Help?’

Lesson 8 – Government in Business

1x4=4

1. What was the role of government in the past? 2. Define state enterprises? 3. How does the state enterprise bring in balanced economic growth? 4. Why departmental organization is suitable for defence industries? 5. Explain the management of public corporation? 6. Define a Government company? Part – C (5/8) Total marks: 5 x 8 = 40

Lesson - 1

1x8=8

1. Write short notes on joint hindu family business. 2. Explain the significance or importance of organization. 3. Explain briefly principle of organization 4. What are the concessions enjoyed by a co-operative society after being registered?

Lesson - 2

1x8=8

1. Explain the role of sole trading concern in the society. 2. “One man control is the best in the world provided that one man is big enough to take care of everything” Discuss. 3. Discuss the Merits and Demerits of Sole Trading form of business.

Lesson – 3

1x8=8

Lesson - 4

2 x 8 = 16

1. Explain the procedure for registration of partnership firm? 2. Describe various kinds of partners. 3.What are the contents of partnership deed? 1. What are the points to be considered while allotting shates? 2. What do you understand by holding and subsidiary companies? 3. State briefly the contents of Articles of Association. 4. What is Memorandum of Association? What are its contents? 5. Write a note on irregular Allotment. 6. Write a note on Guarantee Company. 7. What are the conditions for issuing shares at a discount?

Lesson - 5

1x8=8

1. Explain the position of a director in a company 2. State the circumstances in which a director can be removed? 3. Write an explanatory note on Managing director. 4. State the differences between Managing director and Manager. 5. Write notes on extra ordinary general meeting 6. Enumerate the contents of a statutory meeting? 7. Write short notes on managerial remuneration?

Lesson - 6

1x8=8

1. what are the methods of new issue of shares? 2. Define Stock exchange. Explain its characteristics and function. 3. Who are the operators at a stock exchange? 4. Describe the procedure for trading in stock exchange

Lesson - 7 Mù£‚èœ Þ«î£ ñŸÁ‹

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1. State the meaning of supermarket and explain its features. 2. Write the merits and demerits of co-operative society? 3. Explain the types of Agricultural credit societies. 4. Explain credit society in detail?

Lesson – 8

1x8=8

1. State the features of the departmental from of state enterprises? 2. Discuss the features merits and demerits of departmental organizations? 3. What are features of public corporation? Part – D (4/8) Total marks: 4 x 20 = 80

Lesson 1

1. Explain briefly any ten principles of organization. 2. What do you understand by Multinational companies? Explain its features.

Lesson 2

1 x 20 = 20 1 x 20 = 20

1 Explain the main characteristics of sole trading form of organization 2. Explain the role sole trading concern in the society. 3. Discuss the merits and demerits of sole trading form of business.

Lesson 3

1 x 20 = 20

Lesson 4

1 x 20 = 20

Lesson 5

1 x 20 = 20

1. What are the advantages and disadvantages of partnership firm? 2. Explain any ten differences between partnership and sole proprietorship 3. What are the circumstances under which a partnership dissolves? 1. Discuss briefly the different kinds of companies. 2. Explain briefly the procedures to be followed for forming a public limited company. 3. Explain the different types of shares. 4.Distinguish between shares and debentures. 1. Discuss the functions and duties of company directors. 2. Discuss the powers of directors and restrictions placed on them. 3. Discuss the functions and duties of company secretary. 4. write the explanatory notes on a. Proxy b. Quorum c. Mumutes

Lesson 6

1 x 20 = 20

Lesson 7

1 x 20 = 20

1. Define Stock Exchange. Explain its characteristics and function. 2. What are the benefits and limitations of stock exchange? 3. Explain the Objectives, features, functions and powers of SEBI. 1. Distinguish between the hiont stock company and co-operative society. 2. Write the merits and demerits co-operative society. 3. Explain any eight types of co – operative societies in detail.

Lesson 8 1. Discuss the features merits and demerits of the departmental organization. 2. Explain the objectives of state enterprises. Question Pattern Part – A I 1. Choose ----- 20 2. Fill ups ----- 20 Part – B II Very short Answers 10 out of 15 Part – C III Paragraph 5 out of 8 Part – D IV Detail 4 out of 8 (or) type

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1 x 20 = 20

40 x 1 = 40

10 x 4 = 40

5 x 8 = 40

4 x 20 = 80


ACCOUNTANCY Section – B (VSA) Very short Answer Total - 10 x 5 = 50 Unit - 1 2 x 5 =10 1. What is accrued income? 2. What is outstanding expense? 3. What is bad debt? 4. Write notes on Provision for discount on Debtors. 5. What is adjusting entry? 6. What is drawings? How will the interest on drawings be shown? 7. Write a notes on interest on investments. 8. How will the following adjustments appear in the balance sheet as on 31- 12-2010 Sundry debtors Rs.52,500 Bad debt to be written off Rs. 2,500 Unit – 2 2 x 5 = 10 1. Define incomplete double entry. 2. What is conversion method? 3. Give the format of statement showing the calculation of profit or loss under net worth method. 4. How will you calculate total purchase on creditors. 5. Give the format of statement of affairs. 6. Calculate the missing information from the information given below Closing capital Rs.1,63,800 Additional capital Rs.42,300 Drawings Rs.25,200 loss Rs.12,600 7. From the following information you are required to calculate credit sales Sundry debtors as on 1st april 2003 Rs. 20,400 Cash received from sundery debtors Rs.60,800 Sales returns Rs. 5,400 Sundry debtors as on 1st March 31,2004 2002 Rs. 20,400 Unit - 3 2 x 5 = 10 1. Show the fixed assets account, if there is profit on sales. 2. What is wear and tear? 3. What is obsolescence? 4. What is residual value ? 5. What is annuity method of depreciation. 6. Write the formula to calculate rate of depreciation under straight line method. 7. Write a note on ‘Revaluation method of depreciation’. 8. Define depreciation. 9. A machine costing Rs.4,00,000 is estimated to have a life of 10 years and estimated scrap value is Rs.50,000 at the end of its life. Calculate the rate of depreciation under straight line method. 10. From the following particulars find out the rate of depreciation under straight line method. Cost of assets Rs.25,000 Scrap value Rs.5,000 Estimated life 10 years.

11. a company purchased machinery on 1st april, 2008 for Rs.6,00,000.Depreciation is to be provided at the rate of 10% per annum on fixed instalment method. After having used it for 4 years it was sold for Rs.5,20,000.Accounts are closed on 31 March every year. Calculate profit or loss on sale of machienery. Unit - 4 2 x 5 = 10 1. What are activity ratios ? 2. Explain solvency ratios ? 3. what is the purpose of calculating solvency ratio? 4. Explain stock turnover ratio ? 5. What are operation expenses ? 6. Write notes on net profit raio? 7. what is the objectives of financial statement analysis? 8. What are liquidity ratios. 9. Compute debtors turnover ration from the following. Total sales Rs.15,00,000 Sales returns Rs. 1,00,000 Opening debtors Rs.2,34,000 Closing debtors Rs.1,66,000 10. The cost of goods sold is 2,50,000.The opening stock is Rs.20,000 And closing stock is Rs.30,000. Find out stock turnover ratio. Unit - 5 1x5=5 1. Write notes on budget ? 2. Define budget? 3. What are the characteristics of a budget ? 4. What are the advantages of cash budget ? 5. Give few examples for cash receipts . 6. Prepare cash budget for the month of October from the following information. a) Estimated cash balance on 1st Octobeer Rs. 1,775 b) Credit sales: August Rs.14,000 September Rs. 16,000 October Rs.17,000 Period of credit allowed to customers is one month c) Credit purchases: August Rs.8,000 September Rs. 12,000 October Rs.10,000 Period of credit allowed by suppliers is two months a. Purchase of plant Rs.7,000 b. Wages to be paid in October Rs.2,000 7. The opening balance of cash in January 2002 is Rs.1,50,000. The estimate cash receipts are Rs.50,000 and the estimated cash payments are Rs.30,000 What is the opening balance of cash in February 2002? Unit – 6 3 x 5 = 15 1. Define Partnership. 2. What is Drawings? 3. What is Goodwill? 4. What is Partner’s Current Account? 5. What are the features of a partnership? 6. Explain the methods by which the partners’ capital accounts are maintained.

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7. What are the factors affecting goodwill? 8. Explain the methods of valuation of Goodwill. 9. Prepare the Capital Accounts of the partners, Vani and Rani from the following details assuming that their capitals are fluctuating. Vani Rani Rs. Rs. Capital as on 1.4.2003 2,10,000 1,20,000 Drawings during 2003-04 18,000 12,000 Interest on Capital at 6% ? ? Interest on Drawings 450 300 Share of Profit 2003-04 24,000 18,000 Partner’s Salary --6,000 Commission 4,800 3,600 Interest on Rani’s Loan A/c 3,000 --10. Raj and Sasi are two partners sharing profits and losses equally . Raj drew regularly Rs.2500 at the end of every month during the year. Sasi drew Rs.3500 regularly at beginning of every month during the year. Calculate interest on their drawings 10% P.a. 7. Partnership Accounts - Admission 1. What is meant by admission of a partner? 2. What are the adjustments to be made in connection with admission? 3. What is Sacrifice Ratio? 4. What is revaluation account? 5. How will you treat the undistributed profits and losses at the time of admission of a partner? 6. What is accumulated reserve? 7. What is Revaluation Method of Goodwill? 8. Anandan and Baskaran were partners in a firm sharing profit and loss in the ratio of 3:2. They admit Chandran into the partnership to 1/3rd share, the old partners sacrificing equally. Calculate the new profit - ratio and the sacrificing ratio. 9. Ramesh and Suresh are sharing profits in the ratio of 4:3. Mahesh joins and the new ratio among Ramesh, Suresh and Mahesh is 7:4:3. Find out the sacrificing ratio. 10. A and B are partners in a firm sharing profits and losses in the ratio of 6:4. C is admitted as a new partner. A surrenders 1/5th share of his profit in favour of C and B surrenders 2/5th of his share in favour of C. Calculate New Profit Sharing Ratio. 8. Partnership Accounts - Retirement 1. What do you mean by retirement of a partner? 2. What is new profit ratio on retirement of a partner? 3. What is gaining ratio? 4. What are the adjustments to be made in connection with Retirement? 5. Distinguish between sacrificing ratio and gaining ratio. 6. Thangamuthu, Anaimuthu and Vairamuthu are partners sharing profit and loss in the ratio of 3:3:2. Thangamuthu wanted to retire on 1st 24 |

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June 2005, the firms books showed a general reserve of Rs.40,000. Pass entry. 7. Roja, Meena and Shobana are partners sharing profits in the ratio of 5:4:3. Roja retires and her share is taken up entirely by Meena. Calculate the new ratio. 8. X, Y and Z were sharing profits and losses in the proportion of 1/2 , 1/5 and 3/10 respectively. Y retires. Calculate the new ratio of X and Z. 9. Company Accounts 2 x 5 = 10 1. Define a company. 2. What are the characteristics of a company? 3. What is a share? 4. Explain the procedure for issue of shares. 5. What is allotment? 6. Write a note on equity shares? 7. What is meant by calls-in-advance. 8. What are the differences between over subscription & undersubscription? 9. What is forfeiture of shares? 10. What do you understand by issue of shares at premium? 11. Sridhar Ltd., issued 20,000 shares of Rs.100 each at discount of 10%. Give journal entry. 12. Devi Ltd., issued 30,000 shares of Rs.10 each premium at Rs.4.Give jorunal entry. Part – C

Total - 5 x 12 = 60

Unit - 1 Final Accounts, Adjustments. 1 x 12 = 12 1. Write notes on provision for bad and doubtful debts. 2. Write notes on a) trading account b) profit and loss account and c) balance sheet. 3. Pass necessary adjusting entries for the following adjustments: a) Interest on drawings Rs. 10,000. b) Interest on loan outstanding Rs.5,000. c) Depreciation at 5% on furniture Rs.50,000. d) Write off bad and doubtful debts Rs.3,000. e) Provide provision for bad and doubtful debts at 5% on Sundry debtors Rs.4,00,000. f) Provide provision for discount on creditors at 2% on Sundry creditors Rs. 3,50,000. 4. Trial Balance as on 31.3.05 shows Rs.40,000 as Insurance premium paid. Unexpired insurance premium Rs.5,000. Pass adjusting entry and show how this item will appear in the Final accounts. 5. The Trial Balance shows the followings Capital as on 31.3.03 – Rs.6,00,000 Drawing as on 31.3.03 – Rs.50,000 Charge interest on drawings @ 5%. Pass adjusting and transfer entry. Show how this item will appear in the Final accounts. 6. The Trial Balance shows the value of machinery on 31.3.04 as Rs.50,000. Machinery

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is to be depreciated at 10%. Pass adjustment entry and show how this item will appear in the Final accounts. 7. The Trial Balance shows on 31.3.2002, Sundry debtors Rs.1,25,000. Adjustment: 1. Bad debts to be written off Rs.5,000. 2. Provide @ 5% Provision for bad and doubtful debts and 3. Provide @ 2% Provision for discount on debtors. Pass entries and show how these items will appear in the Final accounts. Unit - 2 1 x 12 = 12 1. Mention the procedure to calculate profit under concersion method. 2. What are the features of single entry ? 3. What are the differences between single entry and double entry? 4. Mrs.Revathi started business with Rs.1,20,000 as capital on 1.4.2003. During the year she has withdrawn at the rate of Rs.1,000 per month. She introduced Rs.20,000 as additional capital. Her position on 31.3.2004 was as follows: Rs. Bank balance 8,000 Stock 80,000 Sundry Debtors 50,000 Furniture 2,500 Cash in hand 2,000 Sundry Creditors 25,000 Expenses outstanding 1,000 She keeps her books under single entry system. Determine her profit or loss for the year 2003-04. 5. From the following details, calculate credit sales made during the year 2004. Rs. Sundry Debtors (1.4.2004) 87,125 Sundry Debtors (31.3.2005) 76,500 Cash received from Sundry debtors 2,46,000 Sales return 18,500 Discount allowed 9,000 6. From the following particulars calculate closing balance of Sundry debtors and Sundry creditors. Rs. Sundry debtors as on 1.4.2002 30,000 Sundry creditors as on 1.4.2002 41,000 Credit purchases 1,50,000 Credit sales 1,70,000 Discount earned 5,000 Discount allowed 6,000 Purchase returns 7,500 Sales returns 6,500 Cash received from Sundry debtors 1,50,000 Cash paid to Sundry creditors 1,40,000 7. A trader has not kept proper books of accounts. His position as on 31.3.2003 and 31.3.2004 was as follows: 31.3.2003 31.3.2004 Rs. Rs.

Cash at Bank 75,000 50,000 Cash in hand 5,000 10,000 Stock 5,00,000 3,25,000 Sundry Debtors 2,00,000 4,00,000 Furniture 50,000 50,000 Machinery 4,00,000 4,00,000 Sundry Creditors 6,00,000 7,00,000 During the year he introduced Rs.1,00,000 as additional capital and withdrew Rs.10,000 per month for domestic purpose. Depreciate furniture and machinery by 10% per year. Ascertain profit or loss for the year ended 31.3.2004. Unit - 3 2 x 12 = 24 Depreciation Accounts 1. What is the meaning of the term ‘Depreciation’ ? 2. What are the causes of depreciation? 3. Give journal entries i. to record depreciation ii. to record for sales of asset. 4. What are the merits and demerits of written down value method ? 5. Senthil purchased Machinery for Rs.4,00,000 on 1st April 2000. On 1st April 2001, an additional machinery was purchased for Rs.40,000. Prepare the Asset account for three years. Depreciation is to be provided at 10% p.a. using Straight Line Method. The firm closes its book on 31st March of every year. 6. Kumaran Brothers purchased a Machinery on 1.1.2000 for Rs.5,00,000. On 1.1.2002 the machinery was sold for Rs.4,00,000. The firm charges depreciation at the rate of 15% per annum on Straight Line Method. The books are closed on 31st March every year. Prepare Machinery account and Depreciation account. 7. On 1st October 2000, a company purchased a plant for Rs.6,00,000. They spent Rs.40,000 on its erection. The firm writes off depreciation at the rate of 20% on Reducing Balance Method. The books are closed on 31st March every year. Prepare Plant account and Depreciation account for three years. 8. A plant is purchased for Rs.90,000. It is depreciated as 10% p.a. on reducing balance for three years. When it becomes obsolete due to new method of production and is scrapped. The scrap produces Rs.66,000 at the end of the third year. Prepare plant and depreciation account for three years. Unit - 4 1 x 12 = 12 Financial statement analysis. Ratio analysis. 1. Explain current ratio ? 2. Explain the terms ratio and ratio analysis ? 3. What are the limitations of financial statement analysis ? 4. What is the need for calculating Debt – Equity ratio ? 5. Write notes on operating profit ratio? 6. From the following information, calculate current ratio and liquid ratio Rs. Rs. Cash 5,000 Debtors 29,000

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Bills receivable 5,000 Short term investment 15,000 Stock 52,000 Prepaid expenses 2,000 Creditors 36,000 Bills payable 10,000 Outstanding expenses 8,000 7. From the following information, calculate current ratio, liquid ratio & Absolute liquid ratio. Cash 1,800 Creditors 5,000 Debtors 14,200 Outstanding expenses 1,500 Stock 18,000 Bank overdraft 7,500 Bills Payable 2,700 Unit - 5 Cash budget 1 x 12 = 12 1. Write notes on receipts and payments method ? 2. Define cash budget Mention the features and limitations of cash budget. 3. Prepare a cash budget for the months of June, July, August 2004 from the following information: 1) Opening cash balance in June Rs.7,000. 2) Cash sales for June Rs.20,000; July Rs.30,000 and August Rs.40,000. 3) Wages payable Rs.6,000 every month. 4) Interest receivable Rs.500 in the month of August. 5) Purchase of furniture for Rs.16,000 in July. 6) Cash Purchases for June Rs.10,000; July Rs.9,000 and August Rs.14,000. 4. Prepare cash budget for the months of June and July 2004. a) Opening cash balance estimated in June Rs. 4,025 b) Cash purchase in June Rs. 12,000 and July Rs. 16,000 c) Cash sales in June Rs. 18,000 and July Rs. 24,000 5. Prepare a cash budget for the month of January, February and March 2005 from the following information Month & Year Credit purchases Credit sales Wages Rs. Rs. Rs. November 2004 2,00,000 2,50,000 50,000 December 2004 3,00,000 3,50,000 60,000 January 2005 3,00,000 4,50,000 60,000 February 2005 4,00,000 2,00,000 80,000 March 2005 5,00,000 3,50,000 70,000 1. Expected Cash balance on 1.1.2005 is Rs.75,000 2. Suppliers allowed a credit period of two months 3. A credit period of two months is allowed to customers 4. Lag in payment of wages is one month Unit – 6 Partnership

2 x 12 = 24

1. Explain the methods of valuation of Goodwill. 2. What are the features of a partnership? 3. In the absence of Partnership Deed, how are the following items dealt in the books of accounts of a firm? a) Interest on Capital b) Interest on drawings c) Salaries to partners d)Commission to partners e) Interest on partners loan f) profit sharing ratio 4. What are the factors affecting goodwill? 5. Explain the methods to calculate interest on drawings. Show the journal entries ? 6. What are the differences between fixed capital account and fluctuating capital account? 7. Write up the Capital and Current Accounts of 26 |

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the partners, Kannagi and Vasugi, from the following details: Kannagi Vasugi Rs. Rs. Capital on 1.4.2003 1,00,000 60,000 Current A/c on 1.4.2003 3,000 (Dr.) 2,000 (Cr.) Drawings during 2003-04 8,000 5,000 Interest on Capital 5,000 3,000 Interest on Drawings 240 150 Share of Profit 2003-04 12,000 10,000 Partner’s Salary 4,000 --8. Manjula and Vennila started business on 1st April 2004 with capitals of Rs.60,000 and Rs. 50,000 respectively. On 1st July 2004 Manjula withdrew Rs.8,000 from his capital. Vennila introduced additional capital Rs.10,000 on 30.9.2004. Calculate interest on capital at 5% for the year ending 31st March 2005. 9. The average net profits of the firm expected in the future are Rs.54,000 per year. The average capital employed in the business is Rs.3,00,000. The rate of interest expected from capital invested in the business is 10%. The remuneration of the partners is estimated to be Rs.9000 per annum. Find out the value of goodwill on the basis of two years purchase of Super Profits. 7. Partnership Accounts – Admission 1. What is Revaluation Method of Goodwill? 2. What are the entries for Revaluation of Assets and Liabilities of a firm in the event of admission of a partner? 3. Rajan and Laxmanan were partners sharing profit and losses in the ratio of 4:3. In view of Velan’s admission, they decided to revalue their assets and liabilities as indicated below: (a) To increase the value of buildings by Rs. 60,000. (b) Provision for doubtful debts to be decreased by Rs.800. (c) To decrease machinery by Rs.16,000, furniture by Rs.4,000 and stock by Rs. 12,000. (d) A provision for outstanding liabilities was to be created for Rs.800 Show the Revaluation Account. 4. Kala and Mala are two partners sharing profits in the ratio of 4:3. Leela is admitted for 1/3rd share of profits. Goodwill of the firm is to be valued at 2 years’ purchase of 3 years’ profits which have been Rs.44,000 Rs. 56,000, Rs. 68,000. Give journal entries if: (a) There is no goodwill in the books of the firm. (b) The goodwill account appears at Rs. 28,000 (c) The goodwill already existing in the books is Rs. 1,68,000

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Part – D

Total – 3 x 20 = 60

Unit - 1 Final Accounts, Adjustments.

1 x 20 = 20

Part – D Total – 3 x 20 = 6 Trial Balance of Anuradha Agencies as on 1. Trial Balance of Anuradha Agencies as on 31.03.2005: 31.03.2005: 1. How will you deal with the amount due to an Unit - 1 Final Accounts, Adjustments. 1 x 20 = 2 outgoing partner? Debit Balances Rs. Credit Balances Rs. gaining 2. Distinguish between sacrificing 1. ratio Trialand Balance of Anuradha Agencies as on1,800 31.03.2005: Drawings Capital 80,000 ratio. Buildings 15,000 General Reserve 20,000 Furniture & Fittings 7,500 Loan from 15,000 3. Explain adjustments of Goodwill of a firm in the Debit Balances Rs. Credit Balances 1,00,000 Rs. Computer 25,000 Hari@6% event of retirement of a partner? Interest on loan 900 Capital 7,500 Sales Drawings 1,800 80,000 4. A, B and C were partners in a firm sharing profits 6,100 Commission 10,000 Loose tools Buildings 15,000 General Reserve 20,000 Purchases 75,000 received in the ratio 4:3:2. C retired. What would be Furniture & Fittings 7,500 15,000 Loan from 25,000 Stock on 1.4.2000 Sundry Creditors their new ratio and gaining ratio in each of the Computer 25,000 1,00,000 15,000 Hari@6% General Expenses following cases. Interest on loan 900 7,500 2,000 Sales Freight inward 6,100 10,000 tools outward 1,000 Commission a) If C’s share was taken up by A and B equally. LooseFreight 28,000 received Sundry Debtors 75,000 b) If C’s share was taken up by A and B in the Purchases 20,200 Sundry Creditors 25,000 StockBank on 1.4.2000 original ratio. Goodwill 10,000 15,000 General Expenses c) If C’s share was take up by A and B in the ratio of 2:1. 2,32,500 2,32,500 2,000 Freight inward d) If C’s share was take up entirely by A. 1,000 Freight outward Adjustments: 5. Ram, Chidambaram and Dev wereAdjustments: partners of Sundry 28,000 Debtors i) Closing stock20,200 is Rs.32,000. i) Closing stock is Rs.32,000. a firm sharing profit and losses in the ratio of Bank ii) Depreciate Computer @10%.; @@ 10% ii) Depreciate Computer @10%.; Buildings FurnitureBuildings and Fittings Goodwill 10,000@ 5%.; 5:3:2. On 1st April 2010, Dev wanted retire,for bad and 5%.; iii) to Provide doubtful debts2,32,500 @and 5%Fittings and for discount @2%. Furniture @ 10% on debtors 2,32,500 Provide andand on Capital @ 8%. they decided to revalue their firms’iv) assets andinterest on iii)drawings Provide@6% for bad doubtful debts @ 5% and Prepare final accounts the said on period after @2%. giving effect to theadjustments. forfordiscount debtors liabilities as indicated below:Adjustments: iv) Provide interest on drawings @6% and on i) Closing stock is Rs.32,000. (a) Increase the value of premises by2.Rs.60,000. From the following Trial Balance Mr. Ravi, prepare Trading and Profit and Loss Account Capital @ of 8%. ii) Depreciate Computer @10%.; 5%.; Furniture @ 10% (b) Depreciate stock, furniture and machinery by ended 31st for the year March,Buildings 2006 and a@ Balance Sheet as onand thatFittings date. Prepare final accounts for discount the said period after @2%. iii) Provide for bad and doubtful debts @ 5% and for on debtors Rs.20,000, Rs. 10,000 and Rs.46,000 respectively. giving@6% effectand to theadjustments. iv) Provide interest on drawings on Capital Trial Balance@ 8%. (c) Provide for an outstanding liability of Creditto theadjustments. Prepare final accounts for theParticulars said period after Debit giving effect 2. From the following TrialRs. BalanceRs. of Mr. Ravi, Rs.4,000. Capital 40,000 prepare Trading and Profit and Loss Account Pass journal entries and revaluation 2. From theaccount following Trial Balance of Mr. Ravi, prepare Trading and Profit and Loss Acco Salesyear ended 31st 25, 000 for the March, 2006 and a 15,000 in the books of the firm to carryout for thethe yearabove ended 31st March, 2006 and a Balance Sheet as on that date. Purchases Balance Sheet as on that2,000 date. Salaries decision of its partners. 1,500 Rent Trial Balance 9. COMPANY ACCOUNTS 300 8. PARTNERSHIP ACCOUNTS – RETIREMENT

1.

Insurance

Debit

Credit

5,000 Particulars Drawings 1. Explain the different types of share capital of a Rs. Rs. Machinery 28,000 company. Capital 40,000 Bank Balance 4,500 25, 000 Sales 2. Explain the procedure for issue of shares. Cash 15,000 2,000 Purchases Stock (1.4.2001) 3. Good Luck Co. Ltd issued 1,00,000 shares @ 2,000 5,200 Debtors Salaries Rs.10 each payable Rs.3 on application Rs.3 2,500 1,500 Creditors 1,000 Rent on allotment and the balance when required. 300 Insurance 1,50,000 shares were applied for. The directors 5,000 66,000 Drawings 66,000 rejected the excess applications and refunded Machinery 28,000 the application money. All money due was Bank Balance 4,500 Adjustments required: received. Pass entries to record the transactions. Cash Stock on 31.3.02 Rs. 4,900 2,000 4. The Directors of a company forfeited 100a)shares b) Salaries unpaid Rs. Stock 300 (1.4.2001) of Rs.10 each fully called up for 5,200 c) Rent Rs. 200 non-payment of First call of Rs.2 per share andpaid in advanceDebtors 2,500 Creditors 1,000 Final call of Rs.3 per share. 60 of these d) shares Insurance prepaid Rs. 90 were subsequently re-issued at Rs.6 per share fully paid up. Pass necessary Journal 66,000 66,000 66,000 entries to record the above. 66,000 5. Ashok Ltd. forfeited 300 shares of Rs.10 each Adjustments required: fully called up held by Ram for non-payment of Adjustments required: a) Stock on 31.3.02 Rs. 4,900 first call of Rs.3 per share and final call money of a) Stock on 31.3.02 Rs. 4,900 b) Salaries unpaid Rs. 300 Rs.4 per share. Out of these shares 250 b) Salaries unpaid Rs. 300 c) Rent paid in advance Rs. 200 were reissued to Shyam for Rs.2,000. Give c) Rent paid in advance Rs. 200 d) Insurance prepaid Rs. 90 Journal entries for forfeiture and re-issue. d) Insurance prepaid Rs. 90 3. From the following Trial Balance of Thiru. Rehman as on 31st March 1995, prepare Trading Part – D Total – 3 x 20 = 60 and Profit and Loss account and Balance sheet Unit - 1 Final Accounts, Adjustments. taking into account the adjustments. 1 x 20 = 20

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3. From the following Trial Balance of Thiru. Rehman as on 31st March 1995, prepare Trading and Profit and Loss account and Balance sheet taking into account the adjustments. 3. From the following Trial Balance of Thiru. Rehman as on 31st March 1995, prepare Trading Other information: Trialsheet Balance and Profit and Loss account and Balance taking into account the adjustments. Credit

Rs. Cash received from Sundry debtors 2,12,460 Drawings 81,600 Salaries paid 18,300 Rent paid 9,450 Cash paid to Sundry creditors 90,360 Sundry expenses paid 3,840 Closing stock (31.3.2007) 32,000 Sundry debtors (31.3.2007) 56,700 Sundry creditors (31.3.2007) 16,000 Cash at bank (31.3.2007) 21,570 Prepare Trading account and Profit and Loss account and a Balance Sheet as on 31.3.2007. 1,76,580 Unit - 3 Depreciation Accounts 1. What are the causes of depreciation? Adjustments: 1,76,580 2. The books2. of Mr.Ravikumar the following What are revealed the merits and information demeritsonof1.4.2006. written a) Stockwas on Rs. 31.3.1995 a) Stock on 31.3.1995 6,800. was Rs. 6,800. Liabilities Rs. Assets Rs. Adjustments: down value method? b) Salary outstanding Rs.1,500 b) Salary outstanding Rs.1,500 Capital 83,030 Goodwill 18,540 a) Stock onprepaid 31.3.1995 was prepaid Rs. 6,800.Rs.150. c) Insurance Rs.150. What is therevealed meaning of theinformation term ‘Depreciation’ c) Insurance 2. The books3.of Mr.Ravikumar the following on 1.4.2006. Sundry creditors 9,010 Furniture 14,010 b) Salary outstanding Rs.1,500 d) Depreciate d) machinery @ machinery 10% and patents 20%. Sundry debtors at bank 46,830 4. Ragapriyan & co aCash machinery Depreciate @ 10%@and patents @ 20%. Liabilities Rs. purchased Assets Rs.worth 12,660 c) Insurance prepaid Rs.150. e) Create a provision of a2% on debtors for bad debts. for bad debts. Capital 83,030 Goodwill 18,540spent Rs. 3,00,000 on 1st October 2000. They e) Create provision of 2% on debtors d) Depreciate machinery @ 10% and patents @ 20%. 92,040 Sundry creditors 9,010 Furniture 14,010 92,040 Rs.20,000 on its errection. The Sundry debtors Cash firm at bank writes 46,830 off e) Create a provision of 2%Unit onUnit debtors for bad debts. 1 x 20 = 20 1 x 20 = 20 - 2- 2 12,660 depreciation at the rate 10% on the original cost 1. Mrs.Pramila maintained her account books st 92,040 Other information: march books are closed on 3192,040 Unitbooks - 2 on single entry system. From 1 the x 20 = 20every year. The 1. Mrs.Pramila maintained her account following Rs. on single entry system. From the following of every year. 2,12,460 Cash from Sundry debtors information availableinformation in her records, prepare Trading, Profit and prepare Loss account forreceived the year available insingle her entry records, 1. Mrs.Pramila maintained her account on system. From the following Other information: Drawings 81,600& co purchased ending 31.3.2003 andTrading, a Balance Sheetbooks as onLoss that date, depreciating machinery at5. On 1st January 2003 keerthi Profit and account for the year Rs.which was sold information available in her records, prepare Trading, Profit and Loss accountSalaries for thepaid year 18,300 plant worth Rs. 1,00,000 10% per annum. 2,12,460 Cashpaid received from Sundry debtors ending 31.3.2003 a Balance Sheet as on Rent 9,450 for Rs. 50,000 ending 31.3.2003 and a Balance Sheet asand on that date, depreciating machinery at away on 31st December 2005 Drawings 81,600 Cash paid to Sundry creditors 90,360 machinery at 10% per annum. that date, depreciating Depreciation was provided at 20% p.a. on the Cash Book Salaries paid 18,300 Sundry expenses paid 3,840 10% per annum.Rs. Rent paid 9,450 Accounts are written down value every 32,000 year. Closing stock (31.3.2007) Receipts Payments Rs. Cash Book creditors 90,360 Cash paid to Sundry debtors (31.3.2007) 56,700year. Show the prepared on 31st march every To Balance b/d To 16,000 By (Cash) Purchases 28,000 Sundry Sundrycreditors expenses(31.3.2007) paid 3,840 Receipts Rs. Payments Rs. 16,000 (Cash) Sales 80,000 By Sundry Creditors 40,000 Sundry plant account and depreciation Closing stock (31.3.2007) 32,000 at bank (31.3.2007) 21,570account for 3 Balance b/d To 16,000 By ByGeneral (Cash) Purchases 28,000 ToTo Sundry Debtors 60,000 12,000 Cash Expenses Sundryaccount debtors (31.3.2007) year.and Prepare Profit and Loss account and56,700 a Balance Sheet as on 31.3.2007. 40,000 (Cash) Sales 80,000 By ByWages SundryBy Creditors 4,000Trading Drawings Sundry creditors (31.3.2007) 16,000 Unit - 4 Financial statement analysis. To Sundry Debtors 60,000 By 12,000 By Balance General Expenses 16,000 Cash at bank c/d (31.3.2007) 21,570 Unit - 3 Depreciation Accounts 4,000 By Wages By Drawings 56,000 Ratio analysis. Prepare Trading account and Profit and Loss account and a Balance Sheet as on 31.3.2007. According to govt.blue print no 20 mark questions 16,000 By Balance c/d 1 x 20 = 20 1,56,000 1,56,000 56,000 Unit - 3 Depreciation Accounts Unit 4 Financial statementBalance analysis. sheet Ratio analysis. 1. -From the following of Rajam1 x 20 = 2 According to govt.blue print no 20 mark questions 1,56,000 1,56,000 Industries Ltd., you required to calculate 1. From the following Balance sheet of Rajam Industries Ltd., you required to calculate Other Information: Unit -Debt-Equity 4 Financial statement analysis. Ratio analysis. ratio, Proprietary ratio, Current1 x 20 = 2 31.3.2002 31.3.2003 Debt-Equity ratio, Proprietary ratio, Current ratio, Fixed assets turnover ratio. Other Information: ratio, FixedBalance assetsSheet turnover ratio. Other Information: as on 31.03.08 Rs. Rs.1. From the following Balance sheet of Rajam Industries Ltd., you required to calculate 31.3.2002 31.3.2003 31.3.2002 31.3.2003 Liabilities Rs. Rs. Proprietary ratio, Current ratio, FixedAssets assets turnover ratio. Sundry Debtors 18,000 ???? Debt-Equity ratio, Rs. Rs. Rs. Rs. Share Capital Fixed Assets 1,20,000 Balance 1,00,000 Sheet as on 31.03.08 Sundry Creditors 28,800 ???? Sundry Debtors Sundry Debtors 18,000 ???? General Reserve 20,000 CurrentAssets Assets 80,000 18,000 ???? 32,000 Liabilities Rs. Rs. Stock 20,000 Debentures 30,000 Sundry Creditors 28,800 ???? Share Capital 1,00,000 Fixed Assets 1,20,000 Sundry Creditors 28,800 ???? Current liabilities 50,000 Machinery 80,000 80,000 Stock 20,000 32,000 General Reserve 20,000 Current Assets 80,000 2,00,000 2,00,000 Stock 20,000 32,00080,000 Furniture 6,000 6,000 Debentures 30,000 Machinery 80,000 Additional information : Credit sales during the year was Rs.4,80,000. Current liabilities 50,000 Additional information:Machinery 80,000 80,0006,000 2. The following is the summarised Trading and Furniture 6,000 2,00,000 2,00,000 Discount allowed 2,800 Furniture 6,000 6,000 Additional information: Profit and Loss A/c, forthe the year ending 2. The followinginformation is the summarised Trading and Profit A/c, forand the year ending and Additional : Credit sales during yearand wasLoss Rs.4,80,000. Discount received 3,400 the Balance Sheet at that date:Sheet as at that date: Discount allowed 2,800 Additional information: theasBalance Credit SalesreceivedDiscount allowed68,800 2,800 Trading andisProfit and Loss Account for Profit the year 31.3.2006 Discount 3,4002. The following the summarised andending Loss A/c, for the ending and Trading andTrading Profitand and Loss Account foryear the Dr. Cr. Credit purchases 28,200 the Balance Sheet as at that date: Credit Sales Discount received68,800 3,400 year ending 31.3.2006 Rs. for the year Particulars Particulars Trading and Profit and Loss Account ending 31.3.2006Rs. Credit purchases Credit Sales 28,200 68,800 Cr Dr Dr. Cr. Opening Stock 10,000 By Sales 1,00,000 To Purchases Closing stock 15,000 Rs.50,000 By Particulars Rs. Particulars Credit purchases 28,200 To Direct Stock expenses 5,000 By Sales Opening 10,000 1,00,000 2. The books of Mr.Ravikumar revealed the To Profit c/d 50,000 ToGross Purchases 50,000 By Closing stock 15,000 1,15,000 1,15,000 following information on 1.4.2006. To Direct expenses 5,000 2. The books of Mr.Ravikumar revealed the following information on 1.4.2006. Debit Balances

Rs.

Balances Trial Balance

Land and Building 42,000 Debit Balances Rs. Machinery 20,000 Patents 7,500 Land and Building 42,000 Stock (1.4.1994) 5,760 Machinery 20,000 Sundry debtors 14,500 Patents 7,500 Purchases Cash at 40,675 Stock (1.4.1994) 5,760 Bank Return 3,170 Sundry debtors 14,500 Inwards Wages 680 Purchases Cash at 40,675 Fuel & Power 8,480 Bank Return 3,170 4,730 Carriage Inwardsinwards Wages 680 2,040 Carriage Fuel & outwards Power 8,480 3,200 Salaries 4,730 Carriage inwards 15,000 General expenses 2,040 Carriage outwards 8,245 Insurance 3,200 Salaries 600 15,000 General expenses 1,76,580 8,245 Insurance 600 Adjustments: 1,76,580

Liabilities

Rs.

Capital Sundry creditors

83,030 9,010

Capital Credit Sales Balances Returns outwards Capital Sundry creditors Sales Returns outwards Sundry creditors

Rs.

62,000 Rs. 98,780 500 62,000 15,300 98,780 500 15,300

Assets

Rs.

Goodwill Furniture Sundry debtors Cash at bank

18,540 14,010 46,830 12,660 92,040

92,040

28 | Other information:

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Cash received from Sundry debtors Drawings Salaries paid Rent paid

To Administrative To Gross Profit c/d expenses To ToInterest Administrative Toexpenses Selling expenses To Net Profit To Interest To Selling expenses To Net Profit

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Rs. 2,12,460 81,600 18,300 9,450

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50,000 By Gross Profit b/d 15,000 1,15,000 3,000 By Gross Profit b/d 12,000 15,000 20,000 3,000 12,000 50,000 20,000 50,000

50,000

1,15,000 50,000

50,000 50,000


Balance Sheet as as on Balance Sheet on31.3.2006 31.3.2006 Liabilities

Rs.

Assets

p.a. for the year ending 31.3.2005. Rs.

2. S, K, R were partners of a firm sharing profit and losses in the ratio 3:2:1. In view of S’s retirement, goodwill was valued at two years’ purchase of the average profits of last 4 years which are: 1,60,000 1,60,000 From the above, calculate – (i) Gross Profit Ratio, (ii) Current Ratio, (iii) Acid Test Ratio, Ist year’s Loss Rs. 6,000 (iv) StockFrom Turnoverthe Ratio, (v) Fixed Assets Turnover above, calculate – (i)Ratio. Gross Profit Ratio, (ii) IInd year’s Profit Rs. 10,000 Current Ratio, (iii) Acid Test Ratio, (iv) Stock IIIrd year’s Profit Rs. 17,000 Turnover Ratio, (v) Fixed Assets Turnover Ratio. - 5 Cash 1 x 20 = 2020 = 20 IVth year’s Profit Rs. 15,000 UnitUnit - 5 Cash budgetbudget 1x What entry would you pass to carry out their 1. Prepare a cash budget for October, November and . Prepare a cash budget for October, November and December 2006 from the following decision? December 2006 from the following information information 7. Partnership Accounts – Admission Month Sales Purchases Purchases Expenses Month Sales Expenses Rs. Rs. Rs. Rs. Rs. Rs. September September 2006 1,10,000 200610,00,000 10,00,000 8,00,000 8,00,000 1,10,000 1. The following is the Balance Sheet of Lion and October 2006 12,00,000 12,00,000 1,30,000 Tiger sharing profits and losses as to October 2006 12,00,000 12,00,000 1,30,000 November 2006 14,00,000 8,00,000 1,50,000 Lilly - 65% and Tulip - 35% as at 31st March DecemberNovember 2006 1,70,000 2006 16,00,000 14,00,000 10,00,000 8,00,000 1,50,000 1. All sales are for cash. 2004: December 2006 16,00,000 10,00,000 1,70,000 2. The period of credit allowed by the suppliers is one month. Liabilities Rs. Assets Rs. 3. Lag payment expenses is one month. 1. in All salesofare for cash. Sundry creditors 25,000 Cash 2,000 4. Opening balance of cash on 1.10.06 is Rs.90,000. The period allowed by the suppliers is Bank overdraft 5. In2.December, an assetof for credit Rs.4,00,000 is to be purchased. 13,000 Debtors 30,000 one month. Profit and Loss A/c 14,000 Stock 20,000 Prepare a Cash Budget Rama Ltd.,offorexpenses the months is of January to March 2005 from the 3. Lag in of payment one month. Capital : Furniture 8,000 following information: 4. Opening balance cash on 1.10.06 is Rs.90,000. Credit of Purchases Credit Sales Expenses Lilly : 40,000 Land and Buildings 50,000 5. In December, anRs.asset for Rs.4,00,000 is to be Rs.Tulip : 30,000 Rs. 70,000 Goodwill 12,000 2004 purchased. 1,22,000 1,22,000 November 2,00,000 2,50,000 2. Prepare a Cash Budget of Rama Ltd., for the 50,000 December 3,50,000 3,00,000 60,000 They agree to take Leopard into the partnership to months of January to March 2005 from the 2005 1/10th share on the following terms: January following information: 3,00,000 4,50,000 70,000 (a) Leopard shall bring in a capital of Rs. 30,000. February 4,00,000 2,00,000 80,000 Credit Purchases Expenses March 5,00,000 Credit Sales3,50,000 70,000 (b) The goodwill of the firm be increased to Additional Information: Rs. Rs. Rs. Rs.15,000 i) Expected cash balance as on 1.1.2005 Rs.75,000 2004 ii) Suppliers allowed credit of two months and a credit of two months is allowed to the (c) A provision of Rs.1,000 be made for customers November 2,00,000 2,50,000 50,000 outstanding repairs bill. iii) Lag in payment of expenses one month. December 3,50,000 3,00,000 iv) Sale of fixed assets in the month of February Rs. 95,000 60,000 (d) The value of land and buildings be brought 2005 upto Rs.60,000 being their present worth. Unit – 6 Partnership 1 x 20 = 20 3,00,000 70,000 P, Q and RJanuary were partners sharing profits in the4,50,000 ratio of 3:2:1. P draws Rs.5,000 at the end of Prepare the Revaluation account, Capital accounts, each quarter. Q draws Rs.10,000 at the end of 2,00,000 each half year. R draws Rs.2,000 on 1.5.2004 February 4,00,000 80,000 Bank account and the Balance Sheet of Rs.3,000 on 31.10.2004, Rs.5,000 on 30.11.2004. Calculate interest on their drawings at 10% 5,00,000 3,50,000 70,000 p.a. for theMarch year ending 31.3.2005. the New Firm. Additional Information: i) Expected cash balance as on 1.1.2005 Rs.75,000 2. A and B sharing pofits in the ratio of 6:4, admit C ii) Suppliers allowed credit of two months and a as a partner with 1/3 share in profits on credit of two months is allowed to the customers 1st January, 2000. The terms agreed upon were, iii) Lag in payment of expenses one month. a) C has to contribute Rs.25,000 as capital. iv) Sale of fixed assets in the month of February Rs. b) Goodwill of the firm be valued at Rs.26,000. 95,000 Capital Current liabilities Profit and Loss A/c

1,00,000 Land and Building Plant 40,000 and Machinery 20,000 Furniture Stock Sundry debtors Bills receivable Cash in hand & at bank

50,000 30,000 20,000 15,000 15,000 12,500 17,500

Unit – 6 Partnership 1 x 20 = 20 1. P, Q and R were partners sharing profits in the ratio of 3:2:1. P draws Rs.5,000 at the end of each quarter. Q draws Rs.10,000 at the end of each half year. R draws Rs.2,000 on 1.5.2004 Rs.3,000 on 31.10.2004, Rs.5,000 on 30.11.2004. Calculate interest on their drawings at 10%

c) Land & building be appreciated by 40%. d) Depreciate Plant & Machinery by 10%. e) The provision for doubtful debts was to be increased by Rs.800. f) A liability of Rs.1,000 included in the Sundry Creditors is not likely to arise. The Balance sheet of A, B as on 31.12.1999 before C’s admission was as follows:

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Liabilities Sundry creditors Bills payable Capitals: A 50,000 B 35,000 General Reserve

Rs. Assets Rs. 29,000 Cash 9,000 25,000 6,000 Land & Building Plant & Machinery 30,000 Stock 15,000 20,000 85,000 Sundry debtors 16,000 Less: Provision for doubtful debts 1,000 19,000 Goodwill 10,000 Profit & Loss Account 28,000 1,36,000 1,36,000 Pass necessary journal entries and prepare important Ledger Accounts and the new Balance Sheet as on 1.1.2000 after admission of C. -8.

PARTNERSHIP ACCOUNTS – RETIREMENT 1. Malligai and Mullai were partners of a firm sharing profits and losses in the ratio of 7:5. Set out below was their balance sheet as on 31st December, 2004. Liabilities Rs. Assets Rs. Sundry creditors 40,000 Bank 52,000 40,000 General reserve 72,000 Sundry debtors Workmen’s Stock 72,000 Compensation 60,000 Fund Machinery 1,60,000 Capital Accounts: Profit and Loss A/c 48,000 Malligai :1,20,000 Mullai : 80,000 2,00,000 3,72,000 3,72,000 Mullai retired from the partnership from 1st January 2005 and that Malligai will take over the business on the following terms: (a) Goodwill of the firm was to be valued at Rs.24,000. (b) Machinery was depreciated at 10%. (c) A provision for doubtful debts at created at 5% on sundry debtors. (d) The liability on workmen’s compensation fund is determined at Rs.36,000. Show revaluation account, capital accounts and the balance sheet of Malligai after the adjustments have been made.

for 24,000 shares. The shares were allotted on pro-rata basis to the applicants for 19,200 shares and the remaining were rejected. Money overpaid on Application was used towards the money due on allotment. All the money due were received except from one shareholder holding 800 shares who failed to pay the final call. Those shares were forfeited and later reissued at Rs.18 as fully paid up. Pass Journal Entries, prepare Ledger Accounts and the Balance Sheet. 2. Saraswathi Ltd. having an authorised capital of Rs.20,00,000 in shares of Rs.100 each invited applications for 10,000 shares payable as follows: On Application Rs. 30 On Allotment Rs. 20 On First Call Rs. 25 On Final Call Rs. 25 The company received applications for 12,000 shares. Applictions for 10,000 shares were accepted in full and the money on 2000 applications rejected was returned. All money due as stated above was received with the exception of the final call of 250 shares. Half of these shares were forfeited and re-issued as fully paid at Rs.90 per share. Pass necessary journal entries. 3. Tirupur Textiles Company invited applications for 10,000 equity shares of Rs.100 each at a discount of Rs.10 per share (allowed at the time of allotment). The amount was payable as follows: On Application Rs. 30 On Allotment Rs. 30 On First and Final Call Rs. 30 The public applied for 9,000 shares and these were allotted. All money due was collected with the exception of first and final call on 400 shares. Subsequently, these shares were forfeited. 200 of these shares were re-issued as fully paid for a payment of Rs.80 per share. Journalise the above transactions in the books of the Company.

9. COMPANY ACCOUNTS 1 x 20 = 20 1. Surya Ltd. issued 16,000 shares of Rs.20 each at par payable Rs.4 on Application, Rs.6 on Allotment, the First call of Rs.5 and Second and Final Call of Rs.5. Applications were received 30 |

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Supplement to Dinakaran issue 27-1-2014 Registrar of news papers for India. Regn No.30424/77 Postal Regn No.TN/CH/(C)/277/12-14 Licenced to post without prepayment of posting under licenceTN / PMG (CCR) / WPP- 277/12-14


COMPUTER SCIENCE PART – II TWO MARK QUESTIONS 1. What is meant by text editing? 2. How would you switch over form Insert mode to Type-over mode? 3. Give the steps involved for replacing a given text. 4. What are the functions of star office? 5. What is the difference between hard formatting and soft formatting? 6. What are the formatting changes that can be made with respect to the fonts? 7. How would you create the bullets and numbered list? 8. What does Automatic Spelling Correction mean? 9. How to make the selected rows and columns of the same size? 10.What are a cell and cell pointer? 11. How will you create a table in the document? 12. How to change the width of a column in a table? 13. How will you delete the entire table in the document? 14. What is meant by header and footer? 15. What is a purpose of creating footer in the document? 16. What is date arithmetic? Explain. 17. Name the different types of cell referencing. 18. Can we change the data present in a cell? If so, how? 19. How will you save a worksheet. 20. Define briefly a spreadsheet application. 21. Define electronic spreadsheet 22. What is meant by range. 23. What is a Database? 24. What is a Database Management System? 25. What is the difference between query and filter? 26. Define primary key. 27. What is meant by relational database? 28. What does it means to ‘filter’ database records? 29. What distinguishes information from data? 30. Write a note on multiple sorting of star office base. 31. Write note on inline sound and video. 32. Define and write the uses of morphing. 33. Write about the types of video compression. 34. What are the two categories of 3D animations. 35. Expand and explain i.AVI ii. MIDI 36. Name the special soft wares used in the multimedia content. 37. Write the full forms of i. AIFF ii. MPEG iii.GIF 38. What is the use of master page in presentation? 39. How will you create hand outs in star office impress? 40. List and describe the features of Impress. 41. What is ‘Rehearse Timings’? Explain in detail. 42. How to include pictures, movies and other OLE objects in a presentation? 43. How to change the slide background? 44. What is the use of slide sorter view? 45. How will you rename a slide in star office impress? 46. What is custom Animation? 47. What is slide transition?

48. Explain the steps of Incorporating Slide Show Effects. 49. What can you do with the left pane of the presentation window? 50. Explain about ‘Custom Slide Show’ in detail. 51. Define object 52. Define polymorphism 53. Define encapsulation 54. What is meant by inheritance 55. List any two advantages of object oriented programming 56. What are pointer variables ? 57. Write the classification of tokens 58. Find the output of the following C++ program: X = 5 ; C = X+++++F. 59. What is type cast 60. Write a note on string literal 61. What are keywords in C++? Give example 62. Write about type of in C++ 63. List out user defined data types 64. Give any two uses of void data type 65. How are the pointer variables declared 66. Write are the various sections of a C++ program 67. What is the purpose of continue statement 68. Write the syntax of nested if statement 69. Write the rules for the formation of nested loops 70. What are control statement ? what are the two main categories of control structures? 71. Differentiate between call by value and call by reference 72. What is the main purposes of using function prototype 73. Write a note on inline functions 74. What are the advantages of using function in C++. 75. What is the uses of strcmp ( ) function? 76. What is an array? write its different types. 77. Write about any two string function in C++. 78. Explain the function strcpy ( ) 79. What is array of strings ?give example. 80. Write a note on write() function 81. What is 2-dimensional array? how can it be declared 82. What is the purposes of strlen ( ) function 83. What are the two parts of class specification ? 84. Write the general form of class declaration 85. Write about static data members 86. What is data abstraction? 87. What is a class ?give example. 88. Explain the two methods of creating objects in C++. 89. Write shorts notes on memory allocation of objects. 90. What is meant by data hiding ? 91. How are the functions ‘invoked in function overloading’? 92. List out the operators that cannot be overloaded. 93. What is function overloading? 94. Mention any two rules for operator overloading. 95. What are the functions of a constructors? 96. When does a copy constructor get executed?


97. Tabulate any two differences between constructor and destructor. 98. Find the errors in the following C++ program snippet. Class simple { Private: Int x: simple ( ) { X = 5; } } 99. What is inheritance? 100. What are the advantages of inheritance? 101. What are the 3 access specifiers while inheriting derived class? 102. Write the syntax for creating a derived class from base class? 103. What is an abstract class? 104. What are the three technical elements we need to reachout benefits’ of IT to the common man? with their brief description. 106. What is ATM? 107. What is e-banking? 108. Expand ITES? 109. What is dictaphone? 110. What is e-governance? 111. What is data management? 112. What are the uses of call centers? 113. What is medical transcription? 114. What is data digitization? 115. What is IT enabled service? 116. What are ethics? 117. What is a computer crime? 118. What is piracy? 119. What is computer virous? 120. What is called theft computer time? PART – III FIVE MARK QUESTIONS 1. Give the steps involved in replacing a given text in a star office writer document. 2. How will you select the required portion of the text in a document using mouse ,Key board and shortcuts. 3. Explain the different ways of selecting text in star office writer document. 4. What are the various types of paragraph alignments that can be made and explain? 5. How will you indent a given text by using paragraph dialog box 6. How would you add a word in the Auto Correct list of the Star Office Writer? 7. How would you carry out the spell check after the entire document is typed? 8. What are the various functions of the icons in the table formatting tool bar? 9. Explain creating header and footer and adding remarks and page numbers in a text document.

10. Explain the process of changing the margins using rulers. 11. What are functions? How can you use them in your worksheet? Explain with an example. 12. What spreadsheet feature allows you to represent data visually as a data – analysis tool? 13. How can you generate a series of values? Explain with an example. 14. What must you include in a formula, to ensure that the formula will operate on a specific value, no matter where the formula might be moved or copied? 15. When entering a formula in a cell, does it matter in which order you enter the values and operators? Explain your answer. 16. List and describe the other features available with spreadsheet software in addition to its ability to calculate numbers. 17. Explain the procedure to insert a chart in a worksheets? 18. Describe what a query is and what it is used for? 19. Explain different data base types? 20. Explain ‘filter’ and its types with example. 21. Explain the process of report generation using a table or query? 22. List and describe the elements that makeup an object in the object oriented database model. 23. List the various field types that can exist in a database. 24. Explain entry-check loops 25. Explain any one of the loops in C++ with example 26. Write syntax and explain switch statement 27. Discuss about the general working of for loop in C++ 28. Explain call by value and call by reference methods in function with example. 29. What are the different ways of passing parameters in C++ function? 30. Write about the different scopes of a variable in C++? 31. How many types of variable scopes are there in C++ explain them with sample snippet? 32. Explain inline functions with an example. 33. What are the various rules while overloading operators in C++? 34. Explain function overloading with rules. 35. Define function overloading. Give an example. What are its various rules? 36. What is a constructor? Explain the role of constructors. 37. What is a copy constructor? Illustrate with an example when a copy constructor is executed? 38. Debug the errors in the following C++ program to get the given output. 39. What is the of the following C++ program. 40. List out the areas of education in which computers are used. 41. Explain how computers help in agriculture. 42. Explain the steps involved in medical transcription. 43. What are steps data digitization? 44. Explain about the protection of personal data? 45. List out the 10 commandments of computer ethics written by the computer ethics institute. 


PHYSICS ELECTROSTATICS BLUE PRINT

1. 2. 3. 4. 5. 6. 7. 8.

9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. 27. 28.

29. 30.

Part I

Part II Part III

4

2

Part IV

1 1 PART II - (3 Marks)

Total 25

Define electric field at a point. Give its unit. What are electric lines of force? State Coulomb’’s law in electrostatics and represent it in vector form. What is permittivity and relative permittivity? How are they related? Define one coulomb. What is an electric dipole? Define.electric dipole moment. Give examples for permanent electric dipoles. What does an electric dipole experience when kept in a uniform electric field and nonuniform electric field? Explain microwave oven. Define electric potential at a point. Distinguish between potential and potential difference. Define one volt. (or) Define unit of potential difference Define potential difference. What is electrostatic potential energy of a system of two point charges? What is an equipotential surface? Define electric flux. Give its unit. State Gauss’s law. Define electrostatic shielding. Why is it safer to be inside a car than standing under a tree during lightning? What is electrostatic induction? Define capacitance of a conductor. Define the unit of capacitance. (or) Define one farad. What is a capacitor? Give an expression for its capacitance. What is dielectric? What are nonpolar molecules? Give examples. What are polar molecules? Give example. Define electric polarisation. If a dielectric slab is introduced between the plates of a parallel plate capacitor what happens to (i) capacitance of the capacitor (ii) electric field between the plates (iii) potential difference between the plates? Define action of points. (Corona-discharge) What are the applications of capacitors?

6|

Three small identical balls have charges -3 ´

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3.

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8.

PART III - (5 Marks) 1. 2.

3.

4.

5.

6.

7.

PROBLEMS ( 3 MARKS) 1.

2.

10-12C, 8 x 10-12 C and 4 x 10-12C respectively. They are brought in contact and then separated. Calculate (i) charge on each ball (ii) number of electrons in excess or deficit on each ball after contact. Calculate the (i) the potential at a point due a charge of 4 x 10-7 C located at 0.09m away (ii) work done in brigning a charge of 2 x 10-9 C from infinity to the point. Two charges 10 x 10-9 C and 20 = x 10-9 C are placed at a distance of 0.3 m apart. Find the potential at a point mid-way between them. A sample of HCl gas is placed in an electric field of 2.5 x 104 N C-1. The dipole moment of each HCl molecule is 3.4 x 10-30 C m. Find the maximum torque that can act on a molecule. Two positive charges of 12µ C and 8M C respectively are 10 cm apart. Find the work done in bringing them 4 cm closer, so that, they are 6 cm apart. Find the electric flux through each face of a hollow cube of side 10 cm, if a charge of 8.85 µC is placed at the centre? An infinite line charge produces a field of 9 x 104 N C-1 at a distance of 2 cm. Calculate the linear charge density. The area of each plate of a parallel plate capacitor is 4 x10-2 sq.m. If the thickness of the dielectric medium between the plates is 10-3 m and the relative permittivity of the dielectric is 7. Find the capacitance of the capacitor. Write the properties of lines of forces. Define electric field at a point. Give its unit and obtain an expressionfor the electric field at a point due to a point charge. State Gauss law. Using this derive an expression for electric field due to two parallel charged sheets. What is electrostatic potential energy of a system of two point charges?Deduce an expression for it. Explain the principle of capacitor. Deduce an expression for the capacitance of the parallel plate capacitor. Derive an expression for the torque acting on the electric dipole when placed in a uniform field. Discuss polarization of dielectric material with a diagram

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PART III Problems - (5 Marks)


1.

2.

3.

4.

5.

6.

The plates of a parallel plate capacitor have an area of 90 cm2 each and are separated by 2.5 mm. The capacitor is charged by connecting it to a 400 V supply. How much electrostatic energy is stored by the capacitor? A parallel plate capacitor has plates of area 200 cm2 and separation between the plates1 mm. Calculate (i) the potential difference between the plates if 1n C charge is given tothe capacitor (ii) with the same charge (1n C) if the plate separation is increased to 2 mm,what is the new potential difference and (iii) electric field between the plates. Three capacitors each of capacitance 9 pF are connected in seriesWhat is the total capacitance of the combination? (ii) What is the potential difference across each capacitor, if the combination is connected to 120 V supply? Two capacitors of unknown capacitances are connected in series and parallel. If the net capacitances in the two combinations are 6μF and 25μF respectively, find their capacitances. Three charges – 2 × 10−9C, +3 × 10−9C, –4 × 10−9C are placed at the vertices of anequilateral triangle ABC of side 20 cm. Calculate the work done in shifting the chargesA, B and C to A1, B1 and C1 respectively which are the mid points of thesides of the triangle. Find the charges on the capacitor shown in figure and the potential difference across them.

6.

Deduce an expression for the equivalent capacitance of capacitors connected in series and parallel.

2. CURRENT ELECTRICITY BLUE PRINT Part I Part II

Part III Part IV

Total

1

2

20

3

-

PART II - (3 Marks) 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22.

Define electric current. Define drift velocity. What is mobility? Distinguish between drift velocity and mobility. Define current density. State ohm’s law. Define resistance of a conductor. What is electrical resistivity or specific resistance of a material? What is superconductivity? What is transition temperature? Define temperature coefficient of resistance. What is internal resistance of a cell? State Kirchoff’s laws. Why is copper wire not suitable for a potentiometer? Compare emf and potential difference. Distinguish between electric power and electric energy., What is wattmeter? State Faraday’s laws of electrolysis. Define electrochemical equivalent of a substance. Distinguish between primary and secondary cells. Why automobile batteries have low internal resistance? What are the applications of secondary cells?

PROBLEMS ( 3 MARKS) 1.

PART IV- (10 Marks) 1. 2.

3. 4. 5.

Derive an expression for electric field due to an electric dipole at a point on its axial line. Derive an expression for electric field due to an electric dipole at a point along the equatorial line. Derive an expression for electric potential due to an electric dipole. Discuss the special cases. State the principle and explain the construction and working of Van de Graaff generator State Gauss’s law. Applying this, calculate electric field due to (i)an infinitely long straight charge with uniform charge density (ii) an infinite plane sheet of charge of q.

2.

3.

4.

If 6.25 x 1018 electrons flow through a given cross section in unit time, find the current. (Given: Charge of an electron is 1.6 x 10 -19 C) How much time 1020 electrons will take to flow through a point, so that the current is 200 mA? (e = 1.6 x 10-19 C) A copper wire of 10-6 m2 area of cross section, carries a current of 2 A. If the number of electrons per cubic metre is 8 x 1028 , calculate the current density and avarage drift velocity. (Given e = 1.6 x 10-19C) What is the drift velocity of an electron in a copper conductor having area 10 x 10-6m2, carrying a current of 2 A. Assume that there are 10 x 1028 electrons / m3.

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5.

6.

7.

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9.

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11.

12.

13.

14.

An incandescent lamp is operated at 240 V and the current is 0.5 A. What is the resistance of the lamp? The resistance of a copper wire of length 5m is 0.5Ω. If the diameter of the wire is 0.05 cm, determine its specific resistance. A manganin wire of length 2 m has a diameter of 0.4 mm with a resistance of 70 Ω. Find the resistivity of the material. The resistance of a nichrome wire at 0° C is 10 Ω. If its temperature coefficient of resistance is 0.004/°C, find its resistance at boiling point of water. Comment on the result. The resistance of a platinum wire at 0° C is 4 Ω. What will be the resistance of the wire at 100°C if the temperature coefficient of resistance of platinum is 0.0038 /° C. A cell has a potential difference of 6 V in an open circuit, but it falls to 4 V when a current of 2 A is drawn from it. Find the internal resistance of the cell. An iron box of 400 W power is used daily for 30 minutes. If the cost per unit is 75 paise, find the weekly expense on using the iron box. A 10Ω resistance is connected in series with a cell of emf 10 V. A voltmeter is connected in parallel to a cell, and it reads 9.9V. find internal resistance of the cell. In a Wheatstone’s briege, if the galvanometer shows zero deflection, find the unknown resistance. Given P = 1000Ω; Q = 10000 Ω and R = 20 Ω. A 1.5 V carbon-zinc dry cell is connected across a load of 1000Ω. Calculate the current and power supplied to it. PART III - (5 Marks)

(1). Define resistivity of a material. How are materials classified based on resistivity? (2) Distinguish between drift velocity and mobility. Establish a relation between drift velocity and current (3) Applications of super conductors (4) Resistances in parallel &Series (5) Internal resistance of a cell (6) Kirchoffs laws (7) Wheatstone network (8) Metre bridge (9) Potentiometer comparison of emfs (10) Lechanche cell (11) Daniel cell (12) Lead acid cell (13) Verification of Kirchoff’s laws of electrolysis (14) The resistance of a field coil measures 50Ω

at 20°C and 65Ω at 70°C.Find the temperature coefficient of resistance.

PART III Problems - (5 Marks) 1.

2.

3.

4.

5.

6.

7.

8.

9.

A copper wire of 10−6 m2 area of cross section, carries a current of 2 A. If the number ofelectrons per cubic metre is 8 × 1028, calculate the current density and average driftvelocity. (Given e = 1.6 × 10−19C) Find the effective resistance between A and B in the given circuit.

Two wires of same material and length have resistances 5Ω and 10Ω respectively. Find the ratio of radii of the two wires. If a copper wire is stretched to make it 0.1% longer. What is the percentage change in resistance? In the given network, calculate the effective resistance between points A and B.

Find the current flowing across three resistors 3Ω, 5Ω and 2Ω connected in parallel to a15V supply. Also find the effective resistance and total current drawn from the supply. The effective resistances two resistances are 10Ω, 2.4Ω when they are connected in series and parallel. What are the resistances of individual resistors? In the given circuit, what is the total resis tance and current supplied by the battery?

Find the voltage drop across 18Ω resistors in the given circuit.


10. Calculate the current I1, I2 and I3 in the given electric circuit.

11. Find the electric current flowing through the given circuit connected to a supply of 3V.

12. In the given circuit, what is the total resistance and current supplied by the battery.

PART II - (3 Marks) 1. State Joule’s law of heating. 2. Why is nichrome used as a heating element in heating devices? 3. Why is a fuse wire connected in an electric circuit? 4. Define Seebeck effect. 5. What inferences can be made from thermoelectric series? 6. What are neutral and inversion temperature? 7. Define Peltier effect. 8. Define Peltier coefficient. 9. What is Thomson effect? 10. Define Thomson coefficient. 11. State Maxwell’s right hand cork screw rule. 12. State Biot-Savart law. 13. State tangent law in magnetism. (OR) Give the principle of tangent galvanometer. 14. Why is a small magnetic needle used in the compass box of tangent galvanometer? 15. State Ampere’s circuital law. 16. State right hand palm rule. 17. State ‘End Rule’. 18. What is magnetic Lorentz force? 19. What is the principle of cyclotron? 20. What are the limitations of cyclotron? 21. State Fleming’s left hand rule. 22. Define one ampere. 23. Give the principle of moving coil galvanometer. 24. Define current sensitivity of a galvanometer. 25. How can the current sensitivity of a galvanometer be increased? 26. Define voltage sensitivity. 27. Increasing the current sensitivity does not necessarily increase the voltage sensitivity. 28. What is Shunt resistance? 29. Why should an ammeter be connected in series in a circuit? 30. Why is a Voltmeter connected in parallel in a circuit? 31. Why should the effective resistance of a voltmeter be large?

PROBLEMS ( 3 MARKS) 1. 2.

3.

EFFECTS OF ELECTRIC CURRENT

3.

BLUE PRINT

Part I

Part II

Part III

Part IV

Total

2

1

1

1

20

4.

Calculate the resistance of the filament of a 100 W, 220 V electric bulb. In a thermocouple, the temperature of the cold junction is -20°C and the temperature of inversion is 600°C. If the temperature of the cold junction is 20°C, find the temperature of inversion. Find the magnetic induction at a point, 10 cm from a long straight wire carrying a current of 10A. A long straight wire carrying current produces a magnetic induction of 4 x 10-6T at a point, 15 cm from the wire. Calculate the current


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