Revise Class 9 Science – Gravitation with Our MCQ Mock Test!

Do you really understand how gravity works beyond “what goes up must come down”? Test your knowledge with this MCQ-based mock test on Gravitation, designed according to the latest Class 9 Science syllabus. This test covers all key topics — Newton’s law of gravitation, universal gravitational constant, free fall, mass and weight, acceleration due to gravity, and numerical problems related to gravitational force and motion.

Each question has been carefully selected to strengthen your understanding, sharpen your problem-solving skills, and prepare you for exam-style challenges. Whether revising for school tests or preparing for board-level concepts, this mock test is your perfect revision partner.

Attempt now and master the concepts of Gravitation with confidence!

1. In a tank having ‘h’ height of liquid, two points at a depth  from free surface have pressures PA and PB. When the point A is more closer to the wall than B. Then

 
 
 
 

2. A 60 kg man weighs W kg on the moon. W is

 
 
 
 

3. Two particles are placed at some distance. If the mass of each of the two particles is doubled, keeping the distance between them unchanged, the value of gravitational force between them will be

 
 
 
 

4. The weight of an object at the centre of the earth of radius R is

 
 
 
 

5. The least value of apparent weight of a body in a fluid is

 
 
 
 

6. A girl stands on a box having 60 cm length, 40 cm breadth and 20 cm width in three ways. In which of the following cases, pressure exerted by the brick will be

 
 
 
 

7. A heavy cylinder of length l is slowly taken out of a dense liquid. The weight felt as it is taken out of the liquid

 
 
 
 

8. An apple and a stone dropped from certain height accelerates

 
 
 
 

9. Acceleration due to gravity on the surface of the moon is th of its value on the surface of the earth as they have different

 
 
 
 

10. Variation of g with distance r from the centre of earth with (r > Re) is best given as

 
 
 
 

11. A mass weighing W can float if the upthrust U is related as

 
 
 
 

12. An object weighs 10 N in air. When immersed fully in water, it weighs only 8 N. The weight of the liquid displaced by the object will be

 
 
 
 

13. An apple falls from a tree because of gravitational attraction between the earth and apple. If F1 is the magnitude of force exerted by the earth on the apple and F2 is the magnitude of force exerted by apple on earth, then

 

 
 
 
 

14. The force of attraction between two unit point masses separated by a unit distance is called

 
 
 
 

15. The wrong option among the following is

 
 
 
 

16. Mass of a book is 500 g on surface of the earth. What will be its mass at a height equal to radius of earth?

 
 
 
 

17. The value of quantity G in the law of gravitation

 
 
 
 

18. Weight of 1 kg is

 
 
 
 

19. Four planets A, B, C and D made up of same material have radius of , r, 2r and 4r respectively. The order of the planets in increasing order of the acceleration due to gravity (on their surface) is

 
 
 
 

20. A body at rest having uniform acceleration is

 
 
 
 

21. If upthrust U is equal to th the weight of the object in air, then the weight felt in the liquid is

 
 
 
 

22. School bags have a broader base to reduce

 
 
 
 

23. An empty closed drum and a filled drum of same dimension will bring

 
 
 
 

24. Acceleration due to gravity on the surface of the earth is the greatest

 
 
 
 

25. Acceleration due to gravity varies with

 
 
 
 

26. The atmosphere is held to the earth by

 
 
 
 

27. Acceleration due to gravity is

 
 
 
 

28. There is no atmosphere on moon as

 
 
 
 

29. Upthrust on a body depends on

 
 
 
 

30. The value of g on the surface of the earth is 9.8 m/s2. What will be its value on the surface of the moon?

 
 
 
 

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