l. A solid weighs 0.040N in air and 0.024N when fully immersed in a liquid of density 80Okgm-3. Calculate the volume of the solid (g

= 10ms-2) (a) 2.O x 10^{-6}m^{3} (b) 2.5 x 10^{-6}m^{3} (c) 3.0 x 10^{-6}m^{3} (d) 2.0 x 10^{-6}m^{3}

**Right choice – Option A**

2. A body of mass 5kg starts from rest and is acted upon by a force 100N, the acceleration in ms-2 and final-velocity after 10 secs will

be (a) 20ms^{-2}, 20ms^{-1} (b) 25ms^{-2}, 250ms^{-1} (c) 20ms^{-2},200ms^{-1} (d) 10ms^{-2}, 300ms^{-1}

**Right choice – Option C**

3. All these are true about impulse except (a) change in momentum of a body (b) its unit is Ns (c) product of force and time (d) change

in acceleration of a body

**Right choice – Option D**

4. A car of mass 100kg moves at a constant speed of 20ms-1 along a horizontal road where the friction force is 200N. Calculate the power

developed by the engine. (a) 2000 Watt (b) 3000 Watt (c) 4000 Watt (d) 5000 Watt

**Right choice – Option C**

5. According to Newton’s second law of motion: momentum is proportional to force action action is equal to reaction but in the opposite

direction impulse force is inversely proportional to time force is proportional to rate of change of momentum

**Right choice – Option D**

6. The heat energy needed to freeze one kilogramme of milk at the inversely point is known as (a) heat energy (b) latent heat of

fusion (c) specific latent heat of fusion (d) specific heat capacity

**Right choice – Option C**

7. In a certain process 12,000 calories of Hexane is supplied to the system while the system does work 7500J. Find the change in internal energy: Note 1cal = 4.184J (a) 57,708J (b) 42,708J(c) 35,208J (d) 50,208J

**Right choice – Option A**

8. Some water is heated in a pot. The major mode(s) of the heat transfer through the water is/are by: (a) convection (b) conduction (c)

radiation (d) conduction and radiation

**Right choice – Option A**

9. Calculate the quantity of heat required to completely convert 20kg ice at 00C of water at the same temperature

(specific latent heat of fusion of ice = 336Jkg-1 (a) 8.06 KJ (b) 706 KJ (c) 538 KJ (d) 6’72 KJ

**Right choice – Option D**

10. An object of mass l0g requires 20J of heat energy to change its temperature by 200C. Calculate the specific heat capacity of the

object.

**Right choice – Option A**

11. Which of these radiation does not originate with the nucleus? (a) Alpha (b) x-rays (c) beta (d) neutron

**Right choice – Option A**

12. A tyre is pumped to u pressure of 30Nm-2 at 270C, when the tyre rates up to 540C. Find the new pressure assuming no change in

volume. (a) 40.7Nm-2 (b) 60.0Nm-2 (c) 32.7Nm-2 d 52.6Nm-2

**Right choice – Option C**

13. An eclipse of the sun may occur when (a) the sun passes between the moon and the Earth (b) the sun passes between the Earth and

the sun (c) the Earth passes between the moon and the sun (d) the moon and the Earth rotate together

**Right choice – Option C**

14. The shortest mirror in which a person 2m height can see its entire image is (a) 2m (b) 0.5m (c) 4m (d) 1m

**Right choice – Option D**

15. The nature of the image formed by an object placed 12cm from a converging lens of focal length 18cm is (a) virtual and magnified

(b) virtual and real (c) a infinity (d) virtual

**Right choice – Option A**

16. An erect image three times the size of the object is obtained from a concave mirror of radius of curvature 36cm, what is the

position of the object from the mirror? (a) 24cm (b) 12cm (c) 10cm (d) 8cm

**Right choice – Option A**

17. The angle of deviation of light of various colours passing through a glass prism decrease in the order (a) red, blue and orange (b)

blue, red, orange (c) red, orange, blue (d) orange, blue, red

**Right choice – Option **

18. Two positive point charges of l2uC and 8uC respectively are 10cm apart. The work done is bringing them 4cm closer is (K= 9 x

10^{9}Nm^{2}c^{-2)} (a) 60J (b) 300J (c) 5.8J (d) 518J

**Right choice – Option **

19. The effective capacitance of a system of capacitors arranged such that a 4uF capacitor is in series with 3uF. (a) 1.7uF (b) 3.0uF

(c) 4uF (d) 5.0uF

**Right choice – Option **

20. How long will it take to heat 3kg of water from 28″C to 880C using an electric kettle, which taps 6,{ from a 210V supply? (a) 5.6

minutes (b) 9.6 minutes (c) 10.0 minutes (d) 19.3 minutes

**Right choice – Option **

21. A moving cell galvanometer has a resistance of 10 Q and a full scale defection of 0.01A, it can be converted into a voltmeter of 10V

full-scale deflection by connecting a resistor of (a) 969 Q parallel (b) 990 O parallel (c) 10 Q parallel (d) 10 Q Parallel

**Right choice – Option **

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