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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

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1 / 30

1. A satellite with an inclination of is in:

2 / 30

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

3 / 30

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

4 / 30

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

5 / 30

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

6 / 30

6. Why is the gravitational potential energy of an orbiting satellite negative?

7 / 30

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

8 / 30

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

9 / 30

9. Which of the following best explains why Newton called his law “universal”?

10 / 30

10. If two bodies each of mass are separated by , what is their gravitational potential energy?

11 / 30

11. Why is essential in determining the motion of artificial satellites?

12 / 30

12. Which of the following is NOT a purpose of artificial satellites?

13 / 30

13. Which satellite orbit is most useful for reconnaissance and surveillance purposes?

14 / 30

14. How does altitude affect ?

15 / 30

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

16 / 30

16. The expression for the binding energy of a satellite of mass in circular orbit of radius around Earth of mass is:

17 / 30

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

18 / 30

18. Why does decrease linearly with depth inside Earth?

19 / 30

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

20 / 30

20. Which of the following was the biggest challenge in Cavendish’s experiment?

21 / 30

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

22 / 30

22. Which principle is applied in deriving the expression for below Earth’s surface?

23 / 30

23. If the orbital period of a satellite around Earth is known, which physical quantity can be calculated using Kepler’s Third Law?

24 / 30

24. Why is gravitational potential always negative?

25 / 30

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

26 / 30

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

27 / 30

27. How did Newton use universal gravitation to explain Kepler’s laws?

28 / 30

28. Why does escape speed not depend on the direction of projection?

29 / 30

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

30 / 30

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

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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. Which geological factor can cause local variations in ?

2 / 50

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

3 / 50

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

4 / 50

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

5 / 50

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

6 / 50

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

7 / 50

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

8 / 50

8. Why is the value of so difficult to measure accurately?

9 / 50

9. Which condition must be satisfied for a satellite to remain in circular orbit?

10 / 50

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

11 / 50

11. At infinity, the gravitational potential energy of an object is taken as:

12 / 50

12. Why is the knowledge of variation with depth important for tunnel construction?

13 / 50

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

14 / 50

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

15 / 50

15. The gravitational self-energy of a uniform solid sphere of mass and radius is given by:

16 / 50

16. Escape speed on Mars is about . What does this imply for spacecraft launches compared to Earth?

17 / 50

17. Which principle explains why kinetic energy decreases with increasing altitude of satellites?

18 / 50

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

19 / 50

19. Why do satellites not fall back to Earth despite the gravitational pull?

20 / 50

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

21 / 50

21. How is the value of used in calculating Earth’s mass?

22 / 50

22. In gravitational collapse of a star, the released energy mainly comes from:

23 / 50

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

24 / 50

24. Which of the following constants has units most similar to ?

25 / 50

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

26 / 50

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

27 / 50

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

28 / 50

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

29 / 50

29. The use of Kepler’s Third Law allowed astronomers to first determine the mass of which celestial body other than Earth?

30 / 50

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

31 / 50

31. For a uniform sphere, which integral correctly represents gravitational self-energy?

32 / 50

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

33 / 50

33. Which ancient philosopher first suggested that every object has a natural place and tends to move toward it?

34 / 50

34. At a point inside a uniform spherical shell of mass , the gravitational potential is:

35 / 50

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

36 / 50

36. What is the angular velocity of a geostationary satellite?

37 / 50

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

38 / 50

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

39 / 50

39. If force is expressed in dyne, mass in grams, and distance in centimeters, the numerical value of will be:

40 / 50

40. Which application of variation is used in mineral and oil exploration?

41 / 50

41. What is the SI unit of gravitational potential?

42 / 50

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

43 / 50

43. Which force is responsible for holding galaxies together?

44 / 50

44. If the potential at a distance from a mass is , then the corresponding field is:

45 / 50

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

46 / 50

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

47 / 50

47. How is total mechanical energy (kinetic + potential) affected when only gravitational force acts on a body?

48 / 50

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

49 / 50

49. Which communication benefit is specific to geostationary satellites compared to low Earth orbit satellites?

50 / 50

50. If the time period of a pendulum is measured as 2 seconds with a length of 1 m, what is the approximate value of ?

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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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