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MCQ Energy Chapter 11 Class 9 Science

MCQ’s For All Chapters – Science Class 9th

1. There will be total 23 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. A body is acted upon by a force 25 N acquires of 2.5 ms-2 and covers a distance of the force. If the body starts from rest, the Kinetic energy acquired by it is?

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Question 1 of 23

2. A freely falling body during its fall will have

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Question 2 of 23

3. A boy climbs on to a wall that is 3.4 m high and gains 2250 J of potential energy. What is the mass of the boy? Take g = 9.8 m/Sec2

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Question 3 of 23

4. What happens to K.E. of a body when 3/4 th of mass is removed and its velocity is doubled?

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Question 4 of 23

5. Elastic potential energy of a body can be achieved by

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Question 5 of 23

6. If the velocity of a moving car is halved, its kinetic energy would

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Question 6 of 23

7. A fish with weight 35 kg dives and hits the ground (zero height) with kinetic energy equal to 3500J. Find the height through which fish dived. Take g = 10 m/s2

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Question 7 of 23

8. Which of the following is not an example of potential energy?

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Question 8 of 23

9. How fast should a person with mass 50kg walk so that his kinetic energy is 625 J?

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Question 9 of 23

10. The kinetic energy of a body changes from 12 J to 60 J due to the action of a force of 5N on an object of mass 4 kg. The work done by the force is:

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Question 10 of 23

11. Two bodies of masses m and 4 m are moving with equal kinetic energy. The ratio of velocities with which they are traveling is :

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Question 11 of 23

12. If the speed of an object doubles, its kinetic energy becomes

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Question 12 of 23

13. If two bodies of different masses have the same K.E. then the relation between momentum and mass will be:
Energy Multiple Choice Questions for CBSE Class 9 Physics   Topperlearning

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Question 13 of 23

14. 1 J is the energy required to do ____ of work.

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Question 14 of 23

15. A body of mass 44 kg is moving at a velocity of 10 m/s is brought to rest in 10mins, the work done is:

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Question 15 of 23

16. For an object to have gravitational potential energy only, it must be

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Question 16 of 23

17. A body at rest cannot have:

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Question 17 of 23

18. Potential energy is energy possessed by an object due to its

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Question 18 of 23

19. Which would have greater impact; a ball with mass m thrown with speed 20 m/s or a ball with mass m/2 thrown at speed 40 m/s?

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Question 19 of 23

20. Assertion : The kinetic energy, with any reference, must be positive.
Reason : In the expression for kinetic energy, the velocity appears with power 2 and mass is a scalar quantity.

Question 20 of 23

21. Assertion : A light body and heavy body have the same momentum. Then they also have the same kinetic energy.
Reason : Kinetic energy depends on the mass of the body.

Question 21 of 23

22. Assertion : A spring has potential energy, both when it is compressed or stretched.
Reason : In compressing or stretching, work is done on the spring against the restoring force.

Question 22 of 23

23. Assertion : When the force retards the motion of a body, the work done is negative.
Reason : Work done depends on angle between force and displacement.

Question 23 of 23

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