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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. Why does a satellite in circular orbit have constant kinetic and potential energy?

2 / 30

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

3 / 30

3. If a satellite orbits very close to Earth’s surface, which of the following is true about its orbital period?

4 / 30

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

5 / 30

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

6 / 30

6. Escape velocity is defined as:

7 / 30

7. Which of the following best describes weightlessness in satellite orbits?

8 / 30

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

9 / 30

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

10 / 30

10. If the orbital radius of a satellite is increased, its orbital speed:

11 / 30

11. What is the defining characteristic of a geostationary satellite?

12 / 30

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

13 / 30

13. Why is called “universal”?

14 / 30

14. What is the gravitational potential energy of a body of mass at Earth’s surface?

15 / 30

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

16 / 30

16. Kepler’s Third Law was later derived mathematically from which theory?

17 / 30

17. Which of the following technologies directly depends on understanding gravitation?

18 / 30

18. In the gravitational formula, what do and represent?

19 / 30

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

20 / 30

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

21 / 30

21. Which is the correct statement of the Law of Universal Gravitation?

22 / 30

22. Which gravitational concept explains why comets follow elongated paths around the Sun?

23 / 30

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

24 / 30

24. If the value of at Earth’s surface is , what will it be at a height equal to Earth’s radius ()?

25 / 30

25. In CGS units, what is the unit of ?

26 / 30

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

27 / 30

27. Why does vary with latitude?

28 / 30

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

29 / 30

29. Why are geostationary satellites suitable for weather forecasting?

30 / 30

30. Kepler’s laws were derived theoretically by Newton using which fundamental law?

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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. Why is gravitational self-energy important in astrophysics?

2 / 50

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

3 / 50

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

4 / 50

4. Why are low Earth orbit satellites preferred for remote sensing?

5 / 50

5. 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:

6 / 50

6. Which of the following technologies directly depends on understanding gravitation?

7 / 50

7. How does altitude affect ?

8 / 50

8. The statement “Every object in the Universe attracts every other object with a force” was first mathematically given by:

9 / 50

9. Which of the following is an Earth observation satellite?

10 / 50

10. Which physical principle allows the use of free-fall experiments to calculate ?

11 / 50

11. Which of the following best describes weightlessness in satellite orbits?

12 / 50

12. If the gravitational field at a point is , what does it mean?

13 / 50

13. Who first experimentally determined the value of the gravitational constant ?

14 / 50

14. Which of the following dimensional checks confirms the correctness of Newton’s gravitational formula?

15 / 50

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

16 / 50

16. What does the altitude of a satellite’s orbit represent?

17 / 50

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

18 / 50

18. Which equation shows the effective value of at latitude considering Earth’s rotation?

19 / 50

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

20 / 50

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

21 / 50

21. The time period of a satellite orbiting Earth is given by:

22 / 50

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

23 / 50

23. What is the relation between orbital speed and escape speed from Earth’s surface?

24 / 50

24. What is the general expression for the gravitational self-energy of a uniform solid sphere of mass and radius ?

25 / 50

25. If the orbital radius of a satellite is increased, its orbital speed:

26 / 50

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

27 / 50

27. If Earth stopped rotating, which of the following would happen?

28 / 50

28. The time period of a satellite depends on:

29 / 50

29. What is the expression for gravitational potential energy of a body of mass at height near Earth’s surface?

30 / 50

30. Which of the following correctly represents Newton’s law of gravitation?

31 / 50

31. What is the average value of on Earth’s surface?

32 / 50

32. Which of the following quantities remains constant in Kepler’s Second Law?

33 / 50

33. What is the SI unit of gravitational potential?

34 / 50

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

35 / 50

35. How is gravitation used in calculating the mass of celestial bodies like Earth or Moon?

36 / 50

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

37 / 50

37. Which orbital condition ensures astronauts experience weightlessness?

38 / 50

38. If a satellite’s orbital radius is doubled, its orbital period increases by a factor of:

39 / 50

39. For two satellites of different masses in the same orbit, their kinetic energies are:

40 / 50

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

41 / 50

41. What is the definition of acceleration due to gravity () at the surface of Earth?

42 / 50

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

43 / 50

43. Which condition allows astronauts to conduct “zero-gravity” experiments in space stations?

44 / 50

44. Why does decrease linearly with depth inside Earth?

45 / 50

45. Why is weightlessness advantageous in materials science experiments in orbit?

46 / 50

46. How do weather satellites help in forecasting?

47 / 50

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

48 / 50

48. Why does weightlessness not require gravity to be zero?

49 / 50

49. If the density of a sphere doubles and radius doubles, the new self-energy compared to the old is:

50 / 50

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

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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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