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MCQ Potential Energy, Class 11 Physics

1. There will be total 20 MCQ in this test.
2. Please keep a pen and paper ready for rough work but keep your books away.
3. The test will consist of only objective type multiple choice questions requiring students to mouse-click their correct choice of the options against the related question number.
4. No negative marking for incorrect choice.
5. Please click on “Finish the Test” when you want to exit.
6. All the best – Happy Studying

1. How much work is done by a man weighing 80 kgf in raising a stone of weight 20 kgf to the top of a building of height 40 m? (g = 9.8 m/s2)

Question 1 of 20

2. The potential energy of a body at height h is mgh. Then its kinetic energy just before hitting the ground is
7

Question 2 of 20

3. When does the potential energy of a spring increase?

Question 3 of 20

4. In the given figure, what is the work done by the spring force?
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Question 4 of 20

5. Which of the following force is non-conservative?

Question 5 of 20

6. A body dropped from height H reaches the ground with a speed of showimage (1)3077_image014The work done by air friction is

Question 6 of 20

7. You are in a lift moving from the 3rd floor to the 12th floor, through a height H. If the elevator moves at a constant speed without stopping, what is the work performed on you by the elevator? Take your body mass as M.

Question 7 of 20

8. An astronomer has total weight of 80 kg. On reaching moon, he climbs up 10 m to enter his aircraft by the ladder. His gravitational potential energy is increased by 1000 J. The value of the gravitational acceleration on the moon is

Question 8 of 20

9. Out of a pair of identical springs of spring constants 240 N/m, one is compressed by 10 cm and other is stretched by 10 cm. The difference in P.E. stored in the two springs is:

Question 9 of 20

10. What is the dimension of k/m where k is the force constant and m is the mass of the oscillating object?

Question 10 of 20

11. A ball of mass 2 kg is raised to the height of 60 m and then dropped from the top. In this case, the quantity which has different magnitude from the other given quantities is

Question 11 of 20

12. A hawk of mass 10 kg dives to catch a mouse. During dive it loses 500 J of its potential energy. The height from where it begins its dive is (take g = 10 m/s2)

Question 12 of 20

13. A vehicle of 50 quintal climbs up a hill of 10 m. The potential energy gained by it is (take g = 10 m/s2)

Question 13 of 20

14. Select the odd one out

Question 14 of 20

15. You are in a lift moving from the 3rd floor to the 12th floor, having a height difference of H = 40 m. Your mass is M = 80 kg and the acceleration due to gravity is g = 10 m/s2. If the elevator moves at a constant speed without stopping, what is the total work performed by all of the forces together (the net force) acting on you?

Question 15 of 20

16. An elastic spring of force constant k is compressed by an amount x. Then its potential energy will be
9

Question 16 of 20

17. A plot of potential energy and kinetic energy versus displacement x for a block attached to a spring obeying Hooke's law is

Question 17 of 20

18. The principle of conservation of energy is represented by
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Question 18 of 20

19. Which of the following is not a kind of potential energy?

Question 19 of 20

20. For a varying force work done can be expressed as a

Question 20 of 20