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Class 11 Physics — Chapter 8: Gravitation Online Test

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Class 11 Physics: Gravitation Online Test (Paper 1)

Welcome to Paper 1! This is your foundation to build confidence and get you ready to tackle the challenges ahead.

  • Total Questions: 20
  • Time Allotted: 30 minutes
  • Passing Score: 40%
  • Randomization: No
  • Certificate: No
  • Retake: Allowed
  • Price: 100% Free

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1 / 20

1. The gravitational self-energy of a uniform sphere of density and radius is:

2 / 20

2. If Earth’s radius is , what is the orbital radius of a geostationary satellite?

3 / 20

3. Why is gravitational potential always negative?

4 / 20

4. Inside a spherical shell of uniform mass distribution, the gravitational field is:

5 / 20

5. How does weightlessness assist in medical research in space?

6 / 20

6. When will a passenger in a lift feel weightless?

7 / 20

7. Which communication benefit is specific to geostationary satellites compared to low Earth orbit satellites?

8 / 20

8. What is the total mechanical energy of a satellite in terms of its potential energy ?

9 / 20

9. If the gravitational constant were larger, how would it affect the potential energy of a satellite?

10 / 20

10. What is the expression for the kinetic energy of a satellite in circular orbit of radius ?

11 / 20

11. Which force is responsible for holding galaxies together?

12 / 20

12. If the semi-major axis of a planet’s orbit is doubled, its orbital period will:

13 / 20

13. Which mathematical relation combines Newton’s Law of Gravitation with Kepler’s Third Law?

14 / 20

14. Which application of Kepler’s laws helps in predicting eclipses and transits?

15 / 20

15. In the formula , what does represent?

16 / 20

16. Why is the inverse-square law form essential in the gravitational formula?

17 / 20

17. Why is called “universal”?

18 / 20

18. Why is called a universal constant?

19 / 20

19. What is the gravitational constant commonly known as?

20 / 20

20. Why was Cavendish’s experiment considered groundbreaking?

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Class 11 Physics: Gravitation Online Test (Paper 2)

Welcome to Paper 2! You’ve mastered the basics, and now it’s time to test your understanding with a more challenging set of questions.

Get new questions on each attempt

  • Total Questions: 30
  • Time Allotted: 45 minutes
  • Passing Score: 50%
  • Randomization: Yes
  • Certificate: No
  • Retake: Allowed
  • Price: 100% Free

Good luck! 👍

1 / 30

1. What is the relation between conservation of energy and escape velocity?

2 / 30

2. Why is the study of gravitation essential for launching artificial satellites?

3 / 30

3. Which of Kepler’s laws can be directly applied to prove that gravitational force acts as a central force?

4 / 30

4. What is the approximate escape speed from Earth’s surface?

5 / 30

5. The self-energy of a solid sphere compared to a hollow shell of same mass and radius is:

6 / 30

6. Why is gravitation important in understanding planetary atmospheres?

7 / 30

7. The gravitational pull of the Moon is mainly responsible for:

8 / 30

8. Why can a skydiver experience near weightlessness during free fall?

9 / 30

9. Which force provides the necessary centripetal force for a satellite to remain in circular orbit around Earth?

10 / 30

10. What happens to the centripetal acceleration of a satellite as its orbital radius increases?

11 / 30

11. At what height above Earth’s surface will become of its surface value?

12 / 30

12. What is the expression for the total mechanical energy of a satellite in circular orbit of radius ?

13 / 30

13. What is the advantage of weightlessness in free-fall laboratories on Earth?

14 / 30

14. Why does decrease linearly with depth?

15 / 30

15. At which location on Earth’s surface is the value of maximum?

16 / 30

16. How does variation of affect aviation and space travel?

17 / 30

17. A polar orbit has an inclination of approximately:

18 / 30

18. Which of the following phenomena can be explained by the universal law of gravitation?

19 / 30

19. The Second Law implies that the force acting on a planet is:

20 / 30

20. What is the definition of escape speed from a planet’s surface?

21 / 30

21. What is the semi-major axis of an elliptical orbit?

22 / 30

22. For an orbiting satellite, what does the negative sign of total energy indicate?

23 / 30

23. What is the order of magnitude of the gravitational force Cavendish measured between the lead spheres?

24 / 30

24. If a planet’s orbit is elliptical, where does it move fastest?

25 / 30

25. Which of the following is an advantage of polar satellites over geostationary satellites?

26 / 30

26. At what approximate altitude above Earth’s surface are geostationary satellites placed?

27 / 30

27. Why is considered fundamental in all gravitational calculations?

28 / 30

28. What does the symbol stand for in the equation?

29 / 30

29. At depth , what is the value of ?

30 / 30

30. If the radius of a planet shrinks to half while keeping the mass constant, how does its gravitational self-energy change?

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Class 11 Physics: Gravitation Online Test (Paper 3)

Welcome to Paper 3! You’ve warmed up—now it's time to step up your game and conquer the challenge with tougher questions!

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  • Total Questions: 50
  • Time Allotted: 75 minutes
  • Passing Score: 70%
  • Randomization: Yes
  • Certificate: Yes
  • Retake: Allowed
  • Price: 100% Free

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1 / 50

1. At which location is minimum?

2 / 50

2. Which modern techniques are used today to improve the measurement of ?

3 / 50

3. Which formula gives the value of acceleration due to gravity at a height above Earth’s surface?

4 / 50

4. Which condition must be satisfied for a satellite to remain in circular orbit?

5 / 50

5. Why do objects inside the International Space Station appear weightless?

6 / 50

6. Two identical planets each of mass and radius merge to form one spherical planet of radius . Ratio of new self-energy to that of one original planet is:

7 / 50

7. At which location on Earth’s surface is the value of minimum?

8 / 50

8. Which of the following statements is true about the potential energy of a satellite?

9 / 50

9. Why is the inverse-square nature of the gravitational law important?

10 / 50

10. Why is gravitational potential energy taken as negative for two masses at a finite separation?

11 / 50

11. Who first measured the value of the gravitational constant ?

12 / 50

12. The weight of an object on the surface of Earth is an application of which law?

13 / 50

13. At which location on Earth’s surface is the value of maximum?

14 / 50

14. If a planet sweeps out an area of in 10 days, then in the next 10 days it will sweep:

15 / 50

15. How do geostationary satellites contribute to disaster management?

16 / 50

16. What is the total energy of a satellite in circular orbit?

17 / 50

17. The self-energy of a sphere of density , radius , is given by:

18 / 50

18. How does variation of affect aviation and space travel?

19 / 50

19. Which of the following is the correct dimensional formula for ?

20 / 50

20. If the radius of a planet doubles while its mass remains constant, what happens to escape speed?

21 / 50

21. Why can fuel mixing in spacecraft be studied effectively in weightlessness?

22 / 50

22. Which of the following correctly represents escape velocity from Earth’s surface?

23 / 50

23. What does the term “weightlessness” mean?

24 / 50

24. What is the time period of a geostationary satellite?

25 / 50

25. A satellite with an inclination of is in:

26 / 50

26. A satellite is launched into a higher orbit. Which of the following increases?

27 / 50

27. Why is the product important in the formula?

28 / 50

28. How is total mechanical energy (kinetic + potential) affected when only gravitational force acts on a body?

29 / 50

29. Which of the following provides the mathematical proof of Kepler’s Third Law?

30 / 50

30. How does altitude affect ?

31 / 50

31. If escape speed from Earth is , what will be the escape speed from a planet of same radius but 9 times Earth’s mass?

32 / 50

32. If the semi-major axis of a planet’s orbit is doubled, its orbital period will:

33 / 50

33. Which of the following factors does NOT affect the value of on Earth?

34 / 50

34. Why is it important to understand each term in the gravitational equation?

35 / 50

35. If a satellite is moved from a lower orbit to a higher orbit, the energy required is:

36 / 50

36. Why do we use the term "point masses" in the derivation of the gravitational law?

37 / 50

37. Which of the following correctly compares gravity at poles () and equator ()?

38 / 50

38. When separation , the gravitational potential energy is:

39 / 50

39. Why is called “universal”?

40 / 50

40. The binding energy of a star is numerically equal to:

41 / 50

41. What physical meaning does gravitational self-energy have?

42 / 50

42. In satellite orbits, when does the exchange between kinetic and potential energy not occur?

43 / 50

43. Why is the value of so difficult to measure accurately?

44 / 50

44. What is the defining characteristic of a polar satellite?

45 / 50

45. Which force is absent when a person feels weightless?

46 / 50

46. Why is the total mechanical energy of a satellite always negative?

47 / 50

47. What is the gravitational constant commonly known as?

48 / 50

48. The use of Kepler’s Third Law allowed astronomers to first determine the mass of which celestial body other than Earth?

49 / 50

49. Why does escape speed not depend on the direction of projection?

50 / 50

50. When an object is moved upward by external force at constant velocity, the work done by gravity is:

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Practice Gravitation MCQs
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Class 11 Physics — Chapter 8: Gravitation Online Test

The Gravitation Online Test for Class 11 Physics helps you understand one of the most interesting yet conceptually challenging topics — the force that binds the universe together. Many students learn Newton’s Law of Gravitation but often face confusion when solving numerical problems on gravitational force, field, potential, and acceleration due to gravity. This chapter-wise online test is designed to remove that fear through focused MCQ practice and real exam-style questions based on the NCERT Class 11 Physics Chapter 8 — Gravitation.

This test series is suitable for CBSE Class 11 students as well as JEE / NEET aspirants who want to master concepts like universal law of gravitation, satellite motion, escape velocity, and variation of g. Each paper is auto-graded, time-bound, and gives instant feedback along with an answer review after submission. It’s not just about marks — it’s about developing clarity, logic, and accuracy while dealing with gravitational concepts.

Attempting these Gravitation MCQ online tests will help you improve conceptual understanding, accuracy, and time management skills. Every question is crafted from important topics like Kepler’s laws of planetary motion, gravitational potential energy, and acceleration due to gravity at different heights and depths. Once you start solving, you’ll realize how simple the concepts become when applied repeatedly.

About this Online Test

The Gravitation Chapter Test includes three papers that increase in difficulty and are designed for both concept-building and exam-level readiness:

  • Paper 1 — Foundation: 20 questions · 30 min · Pass ≥ 40%
  • Paper 2 — Mixed Level Practice: 30 questions · 45 min · Pass ≥ 50% · Random questions each attempt
  • Paper 3 — Advanced Challenge: 50 questions · 75 min · Pass ≥ 70% · Certificate on passing

Each test paper includes questions based on universal law of gravitation, mass and weight, gravitational potential energy, motion of satellites, escape velocity and more. Papers 2 and 3 shuffle new questions each time you attempt, giving you a fresh and dynamic practice experience.

Key Topics Covered (Gravitation)

  • Newton’s Law of Gravitation and its applications
  • Gravitational constant (G) and its measurement
  • Acceleration due to gravity (g) and its variation with height, depth, and latitude
  • Kepler’s laws of planetary motion
  • Gravitational field and potential
  • Escape velocity and orbital velocity
  • Motion of artificial satellites
  • Energy of satellite in circular orbit

How This Gravitation Test Helps You

Many students find numerical problems in Gravitation tricky due to formula confusion. This online test helps you overcome that by providing repeated exposure to problem patterns that actually appear in exams. It’s ideal for quick revision, concept checking, and confidence building before your school tests or JEE/NEET entrance exams.

  • Strengthens formula-based and conceptual problem solving
  • Provides step-by-step learning through three progressive papers
  • Shows instant results, percentage score, and correct answers
  • Free to access anytime without login or registration

Who Should Take This Test

  • Class 11 CBSE/NCERT students preparing for chapter-wise Physics exams
  • JEE and NEET aspirants targeting high-scoring Physics sections
  • Students wanting to revise gravitation formulas and concepts
  • Teachers who want ready-to-use timed chapter quizzes for their students

Preparation Tips for Chapter 8 — Gravitation

  • Revise Newton’s Law of Gravitation and understand how the force acts between any two masses.
  • Practice numerical problems on acceleration due to gravity (g) at height and depth.
  • Study Kepler’s laws carefully — they form the base for satellite motion.
  • Attempt Paper 1 for formula recall, Paper 2 for accuracy, and Paper 3 for full-speed practice.
  • Don’t rush — focus on understanding the concept behind every question.

Before You Start

  • Use latest Chrome or Edge browser for best experience.
  • Ensure stable internet connection during test.
  • Do not refresh or close tab while attempting the test.

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