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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 energy is constant for a satellite in circular orbit?

2 / 30

2. Which of the following best differentiates from ?

3 / 30

3. At a depth equal to half of Earth’s radius, the value of is:

4 / 30

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

5 / 30

5. Which of the following is a practical example of weightlessness on Earth?

6 / 30

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

7 / 30

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

8 / 30

8. What is the SI unit of ?

9 / 30

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

10 / 30

10. In which situation will an astronaut NOT feel weightless?

11 / 30

11. The ratio of self-energy of Earth to that of Moon is approximately (take , ):

12 / 30

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

13 / 30

13. What is the SI unit of gravitational potential energy?

14 / 30

14. If the distance between two masses is doubled, the gravitational force becomes:

15 / 30

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

16 / 30

16. Which situation has higher gravitational potential energy?

17 / 30

17. How much of the Earth’s surface can a polar satellite cover over time?

18 / 30

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

19 / 30

19. Kepler’s Third Law of planetary motion states that:

20 / 30

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

21 / 30

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

22 / 30

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

23 / 30

23. What is the SI unit of ?

24 / 30

24. Which of the following best explains the negative power of in the dimensional formula of ?

25 / 30

25. If the orbital speed of a satellite close to Earth’s surface is about 7.9 km/s, what will be the escape speed from Earth?

26 / 30

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

27 / 30

27. Which equation relates to the universal gravitational constant ?

28 / 30

28. If escape speed from Earth is , what would it be for a planet with twice Earth’s radius and same mass?

29 / 30

29. If the eccentricity of an orbit is close to 1, what does the orbit look like?

30 / 30

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

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

2 / 50

2. Why is considered fundamental in all gravitational calculations?

3 / 50

3. If an object is projected with velocity less than escape speed, what will be its total mechanical energy?

4 / 50

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

5 / 50

5. Which physical principle is used to derive the variation of with depth?

6 / 50

6. Which graph correctly represents variation of gravitational potential with distance from a point mass?

7 / 50

7. At Earth’s center, what would be the value of ?

8 / 50

8. What is the dimensional formula of the gravitational constant ?

9 / 50

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

10 / 50

10. Why is called a universal constant?

11 / 50

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

12 / 50

12. Which plane must a geostationary satellite orbit in?

13 / 50

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

14 / 50

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

15 / 50

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

16 / 50

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

17 / 50

17. Which satellite has higher orbital velocity, geostationary or polar?

18 / 50

18. If a ball of mass falls from a height of , how much work is done by gravity? ()

19 / 50

19. If an astronaut orbits at 400 km above Earth’s surface (Earth’s radius ), what fraction of does he experience?

20 / 50

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

21 / 50

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

22 / 50

22. Which of the following best describes natural satellites?

23 / 50

23. Which formula is used to calculate using a simple pendulum of length and time period ?

24 / 50

24. At what depth below Earth’s surface will become half its surface value?

25 / 50

25. At depth , what is the value of ?

26 / 50

26. A satellite with an inclination of is in:

27 / 50

27. If a satellite of mass moves from an orbit of radius to , the change in energy is:

28 / 50

28. Which physical constant can be determined by applying Newton’s form of Kepler’s Third Law to planetary data?

29 / 50

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

30 / 50

30. Why is it important to study gravitation in physics education?

31 / 50

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

32 / 50

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

33 / 50

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

34 / 50

34. Why does a pendulum clock gain or lose time when moved from equator to poles?

35 / 50

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

36 / 50

36. How does escape speed relate to orbital speed at the same radius?

37 / 50

37. If the inclination of a satellite is not zero, the satellite will:

38 / 50

38. Why do astronauts train in free-fall aircraft on Earth before going to space?

39 / 50

39. Which force is responsible for keeping a satellite in its orbit around Earth?

40 / 50

40. Which equation explains why objects inside an orbiting satellite experience weightlessness?

41 / 50

41. What happens to the gravitational force between two bodies if the value of were larger than its actual value?

42 / 50

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

43 / 50

43. Kepler’s laws, when derived from Newton’s theory, assume which type of central force?

44 / 50

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

45 / 50

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

46 / 50

46. What is the apparent weight of a person inside a freely falling elevator?

47 / 50

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

48 / 50

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

49 / 50

49. The ratio of kinetic energy to gravitational potential energy of a satellite in orbit is:

50 / 50

50. 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:

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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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