Class 11 Physics: Gravitation Online Test | Exam Style Test

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.

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  • Total Questions: 30
  • Time Allotted: 45 minutes
  • Passing Score: 50%
  • Randomization: Yes
  • Certificate: No
  • Retake: Allowed
  • Price: 100% Free

Good luck! 👍

1 / 30

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

2 / 30

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

3 / 30

3. Which application of universal gravitation allows us to calculate the mass of distant planets?

4 / 30

4. Which of the following forces is responsible for the energy exchange between kinetic and potential energy in elliptical orbits?

5 / 30

5. If altitude , what approximate formula can be used for ?

6 / 30

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

7 / 30

7. When an object is brought closer to Earth from infinity, the work done by gravity is:

8 / 30

8. What is the physical meaning of the constant in the gravitational formula?

9 / 30

9. If a solid sphere is broken into two equal halves, the ratio of total self-energy after breaking to the original self-energy is approximately:

10 / 30

10. Which of the following best describes Earth’s orbit around the Sun?

11 / 30

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

12 / 30

12. Which of the following best defines gravitational potential energy (GPE)?

13 / 30

13. What is the dimensional formula of ?

14 / 30

14. If Earth’s mass is and radius is , calculate its gravitational self-energy.

15 / 30

15. For a uniform sphere of radius , the work done to bring a thin spherical shell of mass from infinity to radius is proportional to:

16 / 30

16. The gravitational self-energy of a star of mass and radius (Sun approx.) is:

17 / 30

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

18 / 30

18. Why is the study of gravitation essential for launching artificial satellites?

19 / 30

19. At what altitude above Earth’s surface does a geostationary satellite orbit approximately?

20 / 30

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

21 / 30

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

22 / 30

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

23 / 30

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

24 / 30

24. Which plane must a geostationary satellite orbit in?

25 / 30

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

26 / 30

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

27 / 30

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

28 / 30

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

29 / 30

29. What is the expression for the kinetic energy of a satellite in circular orbit of radius ?

30 / 30

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

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

2 / 50

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

3 / 50

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

4 / 50

4. Application of Kepler’s Third Law to moons of Jupiter allowed astronomers to:

5 / 50

5. Which Indian satellite series is primarily used for communication?

6 / 50

6. A satellite is launched into a higher orbit. Which of the following increases?

7 / 50

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

8 / 50

8. Why is called “acceleration” and not “force”?

9 / 50

9. Which of the following best describes the orbital period of polar satellites?

10 / 50

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

11 / 50

11. Escape velocity is defined as:

12 / 50

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

13 / 50

13. Why does the Sun not collapse under its own gravity?

14 / 50

14. Why are geostationary satellites less useful for military reconnaissance?

15 / 50

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

16 / 50

16. Why are polar satellites effective in disaster management?

17 / 50

17. Which equation relates to the universal gravitational constant ?

18 / 50

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

19 / 50

19. Which astronomer’s precise observations of planetary motion allowed Kepler to formulate his laws?

20 / 50

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

21 / 50

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

22 / 50

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

23 / 50

23. In a simple pendulum experiment, if length is doubled, how does the calculated value of change?

24 / 50

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

25 / 50

25. Kepler’s First Law of planetary motion states that:

26 / 50

26. How does connect with Einstein’s general theory of relativity?

27 / 50

27. Why is the expression more general than ?

28 / 50

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

29 / 50

29. Why do astronauts in space stations experience weightlessness?

30 / 50

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

31 / 50

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

32 / 50

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

33 / 50

33. The total mechanical energy per unit mass of a satellite in circular orbit is:

34 / 50

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

35 / 50

35. The self-energy of a solid sphere compared to a hollow shell of same mass and radius is:

36 / 50

36. What is the main difference between geostationary and polar satellites?

37 / 50

37. Which of the following calculations would be impossible without knowing ?

38 / 50

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

39 / 50

39. Why is (square of the distance) used instead of just ?

40 / 50

40. How does altitude affect ?

41 / 50

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

42 / 50

42. What does the term “weightlessness” mean?

43 / 50

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

44 / 50

44. What is the semi-major axis of an elliptical orbit?

45 / 50

45. For an orbiting satellite, what does the negative sign of total energy indicate?

46 / 50

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

47 / 50

47. Which modern techniques are used today to improve the measurement of ?

48 / 50

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

49 / 50

49. What is the formula for the orbital period of a planet around the Sun using ?

50 / 50

50. Why is it incorrect to say astronauts are “weightless” because there is no gravity in orbit?

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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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