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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. If altitude , what approximate formula can be used for ?

2 / 30

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

3 / 30

3. At Earth’s center, what is the value of ?

4 / 30

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

5 / 30

5. Which geological factor can cause local variations in ?

6 / 30

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

7 / 30

7. If Earth’s mass is and radius is , what is Earth’s escape speed? ()

8 / 30

8. Why are geostationary satellites less useful for military reconnaissance?

9 / 30

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

10 / 30

10. What is one major limitation of geostationary satellites despite their many advantages?

11 / 30

11. What does a more negative gravitational potential energy indicate about the system of two masses?

12 / 30

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

13 / 30

13. Why do rockets require such high energy to leave Earth?

14 / 30

14. Which planet requires the greatest energy to launch a spacecraft?

15 / 30

15. For a uniform density sphere, the gravitational potential at center is related to self-energy by:

16 / 30

16. Which of the following equations correctly represents the universal law of gravitation?

17 / 30

17. What is the condition for experiencing true weightlessness inside a satellite?

18 / 30

18. Why do polar satellites provide high-resolution images of Earth’s surface?

19 / 30

19. Which equation correctly gives escape speed from the surface of a planet?

20 / 30

20. Which law explains why planets revolve around the Sun in elliptical orbits?

21 / 30

21. What is the SI unit of gravitational field strength?

22 / 30

22. Which formula gives the value of at a depth below Earth’s surface (assuming uniform density)?

23 / 30

23. How does gravitational self-energy scale with mass and radius ?

24 / 30

24. What is the main limitation of using a simple pendulum for measuring ?

25 / 30

25. Which of the following is an example of a navigation satellite?

26 / 30

26. Which of the following is NOT a characteristic of geostationary satellites?

27 / 30

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

28 / 30

28. Which of the following statements about gravitational force is correct?

29 / 30

29. The kinetic energy of a satellite depends on:

30 / 30

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

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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. In CGS units, what is the unit of ?

2 / 50

2. Gravitational self-energy of Earth is about:

3 / 50

3. Who was the first scientist to propose the universal law of gravitation?

4 / 50

4. Which of the following is a clear application of weightlessness in astronaut daily life?

5 / 50

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

6 / 50

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

7 / 50

7. In orbital mechanics, which formula shows the direct use of ?

8 / 50

8. A satellite with an inclination of is in:

9 / 50

9. What is the mathematical expression of the universal law of gravitation?

10 / 50

10. Which of the following represents the gravitational self-energy of a uniform solid sphere most correctly?

11 / 50

11. What is the dimensionless nature of the gravitational constant ?

12 / 50

12. Which formula uses to calculate the acceleration due to gravity on the surface of a planet?

13 / 50

13. What is the behavior of gravitational field strength inside a uniform solid sphere?

14 / 50

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

15 / 50

15. If a star loses thermal pressure and collapses under gravity, the role of gravitational self-energy is:

16 / 50

16. Which one of the following is a consequence of the universal law of gravitation?

17 / 50

17. Geostationary satellites are widely used for:

18 / 50

18. Which equation involving is used to calculate the mass of Earth?

19 / 50

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

20 / 50

20. Who is often credited with “measuring the mass of the Earth” using the gravitational constant?

21 / 50

21. Application of Kepler’s Third Law to moons of Jupiter allowed astronomers to:

22 / 50

22. If the orbital radius of a satellite increases, its orbital velocity will:

23 / 50

23. If on the surface, what is its value at a depth of (Earth’s radius )?

24 / 50

24. What is the physical meaning of the constant in the gravitational formula?

25 / 50

25. If altitude , what approximate formula can be used for ?

26 / 50

26. Which type of satellite is used for navigation purposes?

27 / 50

27. How is applied in calculating the time period of a satellite’s orbit?

28 / 50

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

29 / 50

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

30 / 50

30. For a uniform solid sphere, the average potential at interior points is:

31 / 50

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

32 / 50

32. If gravitational potential energy of Earth-satellite system is , how much energy is required to move the satellite to infinity?

33 / 50

33. Which of the following best describes Earth’s orbit around the Sun?

34 / 50

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

35 / 50

35. Which of the following is a practical application of escape speed in space missions?

36 / 50

36. What happens to total mechanical energy of a satellite in elliptical orbit?

37 / 50

37. Who proposed the heliocentric model of the solar system before Kepler and Newton?

38 / 50

38. If work done by gravity on a body is zero, what can be inferred about displacement?

39 / 50

39. Why do astronauts need to secure liquids in sealed containers during weightlessness?

40 / 50

40. What role does gravitation play in the life cycle of stars?

41 / 50

41. Derivation of Kepler’s First Law from Newton’s equations shows that orbital paths can be:

42 / 50

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

43 / 50

43. For Earth, the ratio has what numerical value (approximately)?

44 / 50

44. If a satellite of mass is placed at infinity, its potential energy will be:

45 / 50

45. The ratio of gravitational self-energy of two spheres of equal mass but radii in the ratio 1:2 is:

46 / 50

46. Why is the definition of significant in gravitational studies?

47 / 50

47. If Earth’s mass is and radius is , what is Earth’s escape speed? ()

48 / 50

48. When a body is lifted against gravity, its gravitational potential energy:

49 / 50

49. Which of the following is NOT a characteristic of geostationary satellites?

50 / 50

50. What is the physical significance of escape speed in terms of gravitational potential energy?

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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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