Energy, Class 9 Science Sample Papers

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. 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?

 75 J

 25 J

 250 J

 100 J

Question 1 of 20

2. A freely falling body during its fall will have

 Kinetic energy

 Potential energy

 Sound energy

 Both kinetic energy and potential energy

Question 2 of 20

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

 70 kg

 50 kg

 67.5 kg

 62.5 kg

Question 3 of 20

4. A body of mass 4 kg has a momentum of 25 kg m/s, its K.E. is:

 70 J

 50 J

 100 J

  25 J

Question 4 of 20

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

 becomes 4 times

 becomes 1/2 times

 no change

  becomes 1/4 times

Question 5 of 20

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

 setting it into motion

 raising the body to a height

  using an elastic band to tie the body

 compressing or stretching the body

Question 6 of 20

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

 Double

 Become Half

 Become one fourth

 Remain same

Question 7 of 20

8. 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

 1 km

 100 m

 10 m

 20 m

Question 8 of 20

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

 A compressed spring

 Water stored in the reservoir of dam

 A stretched rubber band

 A moving car

Question 9 of 20

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

 15 km/s

 0.5 m/s

 5 m/s

 5 Km/s

Question 10 of 20

11. 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:

 36 J

 60 J

 48 J

 24 J

Question 11 of 20

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

 3:4

 2:1

 4:5

 1:2

Question 12 of 20

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

 half

 four times

 one-fourth

 double

Question 13 of 20

14. If two bodies of different masses have the same K.E. then the relation between momentum and mass will be:

 A

 B

 C

 D

Question 14 of 20

15. 1 J is the energy required to do ____ of work.

 1 N

 98 J

 1 J

 9.8 N

Question 15 of 20

16. 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:

 220 J

 22000 J

  22 J

 -2200J

Question 16 of 20

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

  Accelerating

 Moving

 Falling

 At an elevated position with respect to the ground

Question 17 of 20

18. A body at rest cannot have:

  potential energy

  kinetic energy

 Electrical energy

 Both A and B

Question 18 of 20

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

 motion

 speed

 position

 None of these

Question 19 of 20

20. 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?

 Ball with mass m

  Ball with mass m/2

 both have the same kinetic energy

 depends on the surface on which the balls are thrown

Question 20 of 20

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