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

2 / 30

2. What is the gravitational potential at a distance from a point mass ?

3 / 30

3. Which is a significant advantage of polar satellites in global weather models?

4 / 30

4. If Earth’s radius were reduced to half while keeping its mass constant, escape speed would:

5 / 30

5. Which of the following practical applications depends on knowing the variation of with altitude?

6 / 30

6. Which formula gives the acceleration due to gravity at a depth below Earth’s surface (assuming uniform density)?

7 / 30

7. How is used to calculate the orbital velocity of a satellite around Earth?

8 / 30

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

9 / 30

9. Which of the following planets experiences the greatest variation in orbital speed due to Kepler’s Second Law?

10 / 30

10. Why do geologists study the variation of across different latitudes?

11 / 30

11. Why is considered a link between terrestrial gravity and cosmic phenomena?

12 / 30

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

13 / 30

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

14 / 30

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

15 / 30

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

16 / 30

16. What is the general formula of gravitational potential energy between two masses and separated by distance ?

17 / 30

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

18 / 30

18. At the surface of a uniform solid sphere of radius , what is the expression for gravitational field?

19 / 30

19. Gravitational self-energy of Earth is about:

20 / 30

20. What is one disadvantage of polar satellites compared to geostationary satellites?

21 / 30

21. Why is escape speed independent of the mass of the escaping object?

22 / 30

22. In the formula , what does represent?

23 / 30

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

24 / 30

24. The path of a satellite around Earth is determined by:

25 / 30

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

26 / 30

26. What is the altitude of a geostationary satellite approximately?

27 / 30

27. If the orbital radius of a satellite doubles, its kinetic energy becomes:

28 / 30

28. Which law of physics combines with conservation of mechanical energy to maintain stable satellite orbits?

29 / 30

29. What type of experiment could directly demonstrate the variation of with latitude?

30 / 30

30. What is the correct formula for gravitational potential energy between two point masses and separated by distance ?

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

2 / 50

2. The perihelion of Earth occurs in:

3 / 50

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

4 / 50

4. What is the value of at Earth’s center?

5 / 50

5. What is the value of gravitational force between two 1 kg masses separated by 1 meter?

6 / 50

6. Which of the following correctly explains why varies with latitude?

7 / 50

7. Why is the gravitational force between two ordinary objects (like a book and a pen) negligible in daily life?

8 / 50

8. What is the eccentricity of a perfectly circular orbit?

9 / 50

9. If a satellite of mass is orbiting Earth of mass , its kinetic energy can be expressed as:

10 / 50

10. Escape speed of an object on Earth does not depend on:

11 / 50

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

12 / 50

12. By what percentage does decrease at an altitude of 1000 km above Earth’s surface? (Take ).

13 / 50

13. What is the expression for the potential energy of a satellite of mass orbiting Earth at radius ?

14 / 50

14. At which location is maximum?

15 / 50

15. Which of the following is a necessary condition for experiencing weightlessness?

16 / 50

16. Which of the following planets experiences the greatest variation in orbital speed due to Kepler’s Second Law?

17 / 50

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

18 / 50

18. Why do all bodies fall at the same rate in the absence of air resistance?

19 / 50

19. Why is escape speed on the Moon lower than on Earth?

20 / 50

20. What is the correct formula for gravitational potential energy between two point masses and separated by distance ?

21 / 50

21. What is the binding energy of a satellite in orbit?

22 / 50

22. If a satellite moves to twice its orbital radius, its potential energy becomes:

23 / 50

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

24 / 50

24. How is total energy of a satellite related to its potential energy?

25 / 50

25. For a uniform solid sphere, the average gravitational potential energy per particle compared to the surface potential is:

26 / 50

26. What is the expression for orbital velocity of a satellite near Earth’s surface?

27 / 50

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

28 / 50

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

29 / 50

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

30 / 50

30. Which condition must be satisfied for a satellite to escape Earth’s gravitational field completely?

31 / 50

31. What is the dimensional formula of ?

32 / 50

32. The gravitational force between two bodies will become four times if:

33 / 50

33. Kepler’s First Law can be theoretically derived using:

34 / 50

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

35 / 50

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

36 / 50

36. Which formula gives the acceleration due to gravity at a depth below Earth’s surface (assuming uniform density)?

37 / 50

37. What was the historical significance of Cavendish’s experiment beyond finding ?

38 / 50

38. When separation , the gravitational potential energy is:

39 / 50

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

40 / 50

40. Which condition must hold true for a satellite to be geostationary?

41 / 50

41. How is kinetic energy of a satellite related to its total energy?

42 / 50

42. A planet has radius and density . Its gravitational self-energy is proportional to:

43 / 50

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

44 / 50

44. Which of the following is the primary use of communication satellites?

45 / 50

45. For a point inside a uniform solid sphere at distance from the center, the gravitational field is:

46 / 50

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

47 / 50

47. Why does decrease linearly with depth?

48 / 50

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

49 / 50

49. If Earth is approximated as a uniform solid sphere of mass and radius , the gravitational self-energy is closest to:

50 / 50

50. When an object is brought closer to Earth from infinity, 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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