Gravitation Quiz - CBSE Class 11 Science

Free practice quiz: Gravitation (CBSE Class 11 Science). 48 multiple-choice questions with answers and explanations. Play online, no sign-up needed.

This CBSE Class 11 Science practice quiz has 48 multiple-choice questions on Gravitation, and 48 of them come with an explanation. Try the 5 sample questions below (tap an option to check yourself), then play the full quiz online. No sign-up needed.

Sample questions

1. What is the force of attraction between any two objects with mass?

   1. Electromagnetic force
   2. Gravitational force
   3. Strong nuclear force
   4. Weak nuclear force
   Show answer

   Answer: B. Gravitational force

   Gravitation is the fundamental force of attraction between any two objects possessing mass.

2. Why does the moon orbit the Earth?

   1. Because of its speed
   2. Because of the Earth's magnetic field
   3. Because of the Earth's gravitational pull
   4. Because of solar winds
   Show answer

   Answer: C. Because of the Earth's gravitational pull

   The Earth's gravity keeps the moon in its orbit.

3. How does the gravitational field strength change as you move further away from a planet?

   1. Increases
   2. Decreases
   3. Remains constant
   4. Changes erratically
   Show answer

   Answer: B. Decreases

   Gravitational field strength follows an inverse square law with distance.

4. If an object is dropped from a height, what is the initial velocity?

   1. It depends on the object's mass
   2. It depends on the height
   3. Zero
   4. It depends on the air resistance
   Show answer

   Answer: C. Zero

   When dropped, an object starts from rest.

5. How does the Earth's gravity affect the atmosphere?

   1. It holds the atmosphere in place
   2. It causes wind patterns
   3. It creates weather systems
   4. All of the above
   Show answer

   Answer: D. All of the above

   Gravity is crucial for maintaining and shaping Earth's atmosphere and weather.

More questions in this quiz

Answers and explanations are in the full quiz.

1. Which law describes the force of gravitational attraction between two objects?
2. What is the unit of gravitational force?
3. If the distance between two objects is doubled, what happens to the gravitational force between them?
4. What is the value of the gravitational constant (G)?
5. What is acceleration due to gravity (g) on the surface of Earth (approximately)?
6. What causes objects to fall towards the Earth?
7. What is the relationship between the mass of an object and its gravitational force?
8. What is weight?
9. Explain the concept of 'escape velocity'.
10. How does the gravitational force exerted by the sun affect the Earth?
11. What is the effect of altitude on the acceleration due to gravity?
12. Two objects of equal mass are separated by a certain distance. If the mass of one object is doubled, what happens to the gravitational force?
13. Derive an expression for the acceleration due to gravity (g) in terms of G, M, and R (where M is the mass of the Earth and R is its radius).
14. A satellite is orbiting the Earth. What is the direction of the gravitational force acting on the satellite?
15. What is meant by 'geostationary satellite'?
16. Explain the concept of 'weightlessness' in space.
17. Describe how the mass of a planet influences its gravitational field strength.
18. What is the gravitational potential energy of an object?
19. Calculate the gravitational force between two objects with masses m1 and m2 separated by a distance r (Use Newton's Law of Universal Gravitation).
20. Explain how tides are caused.
21. Why is the gravitational force on the Earth stronger than on the Moon?
22. What is the significance of Kepler's Laws in understanding gravitation?
23. What is meant by 'microgravity'?
24. What is the effect of gravity on the shape of planets?
25. How does gravitational field strength vary with distance from the center of a planet?
26. What is the name of the point where the gravitational forces of two celestial bodies balance each other?
27. What is the term used to describe the change in the weight of an object due to the Earth's rotation?
28. A person weighs less at the equator than at the poles. Why?
29. Explain the concept of gravitational redshift.
30. What is a black hole?
31. Describe the concept of gravitational time dilation.
32. What is the Schwarzschild radius?
33. Explain the concept of gravitational lensing.
34. What is Einstein's theory of General Relativity?
35. What is the relationship between gravitational potential energy and height?
36. Why are astronauts weightless in space?
37. What is the difference between a geocentric and a heliocentric model of the solar system?
38. Describe how gravity affects the orbits of planets.
39. What is the role of gravity in the formation of stars?
40. How does gravity influence the lifespan of a star?
41. Explain the concept of a gravitational wave.
42. What are the limitations of Newton's Law of Universal Gravitation?
43. What is the significance of the Cavendish experiment?

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