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MCQs on Work and Energy
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MCQs on Work and Energy
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15 Questions

1. A man is carrying the heavy luggage from one platform to the other of a Railway station but still according to the logics of science his work done is said to be zero. Can you opt out the correct reason?
2. The momentum of a bullet of mass 20 g fired from a gun is 10 kg m/s. The kinetic energy of this bullet in kJ will be:
3. When a body falls freely towards the earth, then its total energy
4. A car is accelerated on a leveled road and attains a velocity 4 times of its initial velocity. In this process, the kinetic energy of the car
5. An iron sphere of mass 10 kg has the same diameter as an aluminium sphere of mass 3.5 kg. Both spheres are dropped simultaneously from a tower. When they are 10 m above the ground, they have the same:
6. A microphone converts:
7. The type of energy possessed by a simple pendulum, when it is at the mean position is:
8. The type of energy possessed by a simple pendulum, when it is at the mean position is:
9. Two objects of masses 1 × 10-3kg and 4 × 10-3 kg have equal momentum. What is the ratio of their kinetic energies?
10. A car is accelerated on a leveled road and attains a velocity 4 times of its initial velocity. In this process, the kinetic energy of the car
11. In the dams water is stored in the high reservoirs and then made to fall down. This falling water then rotates the turbines to generate electricity. In this energy conversion process can you tell the initial and final energies respectively?
12. When a body like earth is moving in a circular path the work done in that case is zero because:
13. When a body like earth is moving in a circular path the work done in that case is zero because:
14. A man of mass 50 kg jumps to a height of 1 m. His potential energy at the highest point is(g = 10 m/s2):
15. A body is falling from a height h. After it has fallen to a height of h/2, it will possess:

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