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Question 1 of 30
1. Question
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?
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Question 2 of 30
2. Question
When a body falls freely towards the earth, then its total energy
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Question 3 of 30
3. Question
When a body like earth is moving in a circular path the work done in that case is zero because:
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Question 4 of 30
4. Question
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
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Question 5 of 30
5. Question
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:
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Question 6 of 30
6. Question
Which one of the following is not the unit of energy?
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Question 7 of 30
7. Question
The form of energy possessed by a flying bird is:
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Question 8 of 30
8. Question
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?
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Question 9 of 30
9. Question
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):
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Question 10 of 30
10. Question
The type of energy possessed by a simple pendulum, when it is at the mean position is:
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Question 11 of 30
11. Question
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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Question 12 of 30
12. Question
Two objects of masses 1 × 10-3kg and 4 × 10-3 kg have equal momentum. What is the ratio of their kinetic energies?
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Question 13 of 30
13. Question
The work done on an object does not depend upon the:
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Question 14 of 30
14. Question
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:
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Question 15 of 30
15. Question
A microphone converts:
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Question 16 of 30
16. Question
Which of the following energy change involves frictional force?i. Potential energy to sound energy
ii. Chemical energy to heat energy
iii. Kinetic energy to heat energy
iv. Chemical energy to heat energy
Choose the correct option among the following:CorrectIncorrect -
Question 17 of 30
17. Question
When a body falls freely towards the earth, then its total energy:
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Question 18 of 30
18. Question
In case of negative work, the angle between the force and displacement is:
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Question 19 of 30
19. Question
Water stored in a dam possesses:
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Question 20 of 30
20. Question
Which one of the following is not the unit of energy?
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Question 21 of 30
21. Question
A body is falling from a height h, After it has fallen a height \(\frac{h}{2}\), it will possess:
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Question 22 of 30
22. Question
The capacity of a body to perform work is called:
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Question 23 of 30
23. Question
The rate of work done is called:
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Question 24 of 30
24. Question
The capacity to perform work is obtained from :
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Question 25 of 30
25. Question
An object of mass, m moving with velocity v has a kinetic energy of:
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Question 26 of 30
26. Question
The gravitational potential energy of an object of mass, m raised through a height, h from the earth’s surface is given by:
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Question 27 of 30
27. Question
If the displacement of the object is zero then the work done on an object by a force would be:
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Question 28 of 30
28. Question
What is the energy possessed by an object due to its motion?
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Question 29 of 30
29. Question
1 kJ equals ______
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1 kJ equals J
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Question 30 of 30
30. Question
_______ formulated a law for the heating effect of electric current.
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formulated a law for the heating effect of electric current.
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