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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.

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

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1 / 30

1. If a satellite of mass 1000 kg is shifted from orbit to , the required energy is proportional to:

2 / 30

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

3 / 30

3. According to Kepler’s Second Law, a planet moves fastest when it is at:

4 / 30

4. What is the definition of gravitational potential at a point?

5 / 30

5. Which factor directly affects the magnitude of potential energy of an orbiting satellite?

6 / 30

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

7 / 30

7. Which of the following is true about kinetic energy of an orbiting satellite?

8 / 30

8. Which equation helps explain why astronauts float inside the ISS?

9 / 30

9. Why don’t satellites fall back to Earth?

10 / 30

10. At a point inside a uniform spherical shell of mass , the gravitational potential is:

11 / 30

11. What is the SI unit of the universal gravitational constant ?

12 / 30

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

13 / 30

13. A uniform solid sphere has mass and radius . Work required to disperse the sphere into space (binding energy) is:

14 / 30

14. Which equation shows how is used to calculate the escape velocity of a satellite from Mars (mass , radius )?

15 / 30

15. What is the SI unit of gravitational potential?

16 / 30

16. How did Newton’s derivation of Kepler’s laws strengthen the concept of universal gravitation?

17 / 30

17. If a star loses half of its radius but keeps its mass constant, the released gravitational energy is:

18 / 30

18. At which location is maximum?

19 / 30

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

20 / 30

20. Which satellite application is most useful in predicting cyclones and hurricanes?

21 / 30

21. Why is called a universal constant?

22 / 30

22. If the total mechanical energy of a satellite is doubled (less negative), what happens to its orbit?

23 / 30

23. Why are geostationary satellites ideal for communication?

24 / 30

24. Which of the following is a direct example of universal gravitation in everyday life?

25 / 30

25. Escape speed is derived by equating which two forms of energy?

26 / 30

26. Which force is responsible for holding galaxies together?

27 / 30

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

28 / 30

28. The effective acceleration due to gravity at the equator is given by:

29 / 30

29. Which concept by Galileo was crucial for Newton’s first law of motion?

30 / 30

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

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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

Good luck! 👍

1 / 50

1. Which formula shows how determines the gravitational field strength at the surface of a planet?

2 / 50

2. Which type of orbit do polar satellites generally follow?

3 / 50

3. For two bodies of mass and , if their separation is reduced to half, gravitational potential energy becomes:

4 / 50

4. What is the significance of geostationary orbit?

5 / 50

5. Which of the following is an application of weightlessness in free-fall experiments on Earth?

6 / 50

6. Why is gravitation considered a universal force?

7 / 50

7. A uniform solid sphere has mass and radius . Work required to disperse the sphere into space (binding energy) is:

8 / 50

8. How is measured in modern laboratories with high precision?

9 / 50

9. What does the constant represent in Newton’s law of gravitation?

10 / 50

10. Polar satellites usually orbit at which altitude?

11 / 50

11. Which statement is true regarding above Earth’s surface?

12 / 50

12. Which principle is applied in deriving the expression for below Earth’s surface?

13 / 50

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

14 / 50

14. The potential energy of a satellite is related to its kinetic energy as:

15 / 50

15. What is the dimensional formula of ?

16 / 50

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

17 / 50

17. At high mountains, why does water boil at a lower temperature?

18 / 50

18. Which situation has higher gravitational potential energy?

19 / 50

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

20 / 50

20. A polar orbit has an inclination of approximately:

21 / 50

21. Which law of Kepler can be applied to calculate the orbital period of a geostationary satellite?

22 / 50

22. Why is escape speed important in understanding planetary atmospheres?

23 / 50

23. Why are space telescopes placed in orbit where weightlessness prevails?

24 / 50

24. Why are units and dimensions of important in physics?

25 / 50

25. Why is the escape speed from the Moon much lower than from Earth?

26 / 50

26. How is the gravitational potential energy between two masses expressed using ?

27 / 50

27. Which of the following determines the speed of a satellite in orbit?

28 / 50

28. What is the relationship between work done by gravity and change in gravitational potential energy?

29 / 50

29. At what approximate altitude does reduce to 75% of its surface value?

30 / 50

30. Escape speed is derived using which principle?

31 / 50

31. How does escape speed affect the possibility of human colonization on other planets?

32 / 50

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

33 / 50

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

34 / 50

34. How does dimensional analysis of help in deriving related physical equations?

35 / 50

35. According to Newton’s law of gravitation, the force between two masses is:

36 / 50

36. Why is accurate measurement of significant in physics and engineering?

37 / 50

37. If the radius of a star contracts to half while keeping mass constant, the change in gravitational self-energy is:

38 / 50

38. How does potential energy of a satellite vary with orbital radius ?

39 / 50

39. What is the gravitational potential energy of a satellite at a distance of from Earth’s center (Earth’s mass )? ()

40 / 50

40. Which of the following correctly represents the distribution of energy for a satellite in circular orbit?

41 / 50

41. If the gravitational potential energy of a system is , what does it indicate?

42 / 50

42. For a uniform solid sphere of mass and radius , what is the gravitational field at a point outside the sphere at distance ?

43 / 50

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

44 / 50

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

45 / 50

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

46 / 50

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

47 / 50

47. In Kepler’s First Law, what is located at the other focus of the elliptical orbit (not occupied by the Sun)?

48 / 50

48. Which factor directly affects the magnitude of potential energy of an orbiting satellite?

49 / 50

49. Which equation helps explain why astronauts float inside the ISS?

50 / 50

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

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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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