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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. Kepler’s Second Law of planetary motion states that:

2 / 30

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

3 / 30

3. Why does a satellite in low Earth orbit still experience nearly the same gravitational acceleration as on Earth’s surface?

4 / 30

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

5 / 30

5. Which principle ensures that the total mechanical energy of a satellite in orbit remains constant?

6 / 30

6. Which force provides the necessary centripetal force for a satellite to remain in circular orbit around Earth?

7 / 30

7. Which of the following is an artificial satellite?

8 / 30

8. What is the dimensional formula of ?

9 / 30

9. Time period of a typical polar satellite orbit is approximately:

10 / 30

10. Which relation is used in a free-fall experiment to calculate if a body falls a distance in time ?

11 / 30

11. In Kepler’s Third Law, if is measured in years and in AU, then the proportionality constant for planets around the Sun is:

12 / 30

12. What is the SI unit of ?

13 / 30

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

14 / 30

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

15 / 30

15. Why are polar satellites suitable for environmental studies?

16 / 30

16. What is the approximate numerical value of in SI units?

17 / 30

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

18 / 30

18. Why is considered the least precisely known of the fundamental physical constants?

19 / 30

19. Why can hot hydrogen escape from Earth’s upper atmosphere while oxygen and nitrogen remain bound?

20 / 30

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

21 / 30

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

22 / 30

22. 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:

23 / 30

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

24 / 30

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

25 / 30

25. If escape speed from Earth is , what will be the escape speed from a planet of same radius but 9 times Earth’s mass?

26 / 30

26. Why are polar satellites effective in disaster management?

27 / 30

27. Which of the following best describes natural satellites?

28 / 30

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

29 / 30

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

30 / 30

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

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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. What type of satellite is the Hubble Space Telescope?

2 / 50

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

3 / 50

3. If the semi-major axis of a planet’s orbit is doubled, its orbital period will:

4 / 50

4. What is the fundamental significance of the gravitational constant in physics?

5 / 50

5. Why is the gravitational self-energy of a solid sphere negative?

6 / 50

6. Why is gravitation important in understanding planetary atmospheres?

7 / 50

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

8 / 50

8. Why do astronauts inside the International Space Station (ISS) feel weightless?

9 / 50

9. Which formula gives the value of acceleration due to gravity at a height above Earth’s surface?

10 / 50

10. What is the SI unit of the gravitational constant ?

11 / 50

11. Which of the following is an example of a communication satellite?

12 / 50

12. Which of the following was historically one of the first practical applications of Kepler’s laws?

13 / 50

13. Which of the following is a misconception about weightlessness?

14 / 50

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

15 / 50

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

16 / 50

16. Why is the energy of a satellite always negative?

17 / 50

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

18 / 50

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

19 / 50

19. Why were Kepler’s laws considered incomplete before Newton?

20 / 50

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

21 / 50

21. The time period of a satellite depends on:

22 / 50

22. How does weightlessness help in space agriculture research?

23 / 50

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

24 / 50

24. Which satellite can cover the entire globe due to its orbital path?

25 / 50

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

26 / 50

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

27 / 50

27. Why is gravitational potential energy taken as negative for two masses at a finite separation?

28 / 50

28. Why are geostationary satellites suitable for weather forecasting?

29 / 50

29. At which location is maximum?

30 / 50

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

31 / 50

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

32 / 50

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

33 / 50

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

34 / 50

34. Galileo’s experiments on falling bodies showed that:

35 / 50

35. What is the formula for effective gravity at latitude considering Earth’s rotation?

36 / 50

36. If a lift falls freely under gravity, passengers inside will experience:

37 / 50

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

38 / 50

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

39 / 50

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

40 / 50

40. What is the escape speed from the Moon’s surface? (Moon’s mass , radius )

41 / 50

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

42 / 50

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

43 / 50

43. Which of the following is a combined application of communication and weather satellites?

44 / 50

44. Which of the following correctly represents escape velocity from Earth’s surface?

45 / 50

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

46 / 50

46. Which principle ensures that the total mechanical energy of a satellite in orbit remains constant?

47 / 50

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

48 / 50

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

49 / 50

49. If a body of mass is lifted to a height , how much work is done against gravity?

50 / 50

50. The perihelion of Earth occurs in:

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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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