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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 force provides the centripetal force for satellites orbiting Earth?

2 / 30

2. Polar satellites usually orbit at which altitude?

3 / 30

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

4 / 30

4. When a body attains escape speed, its total energy becomes:

5 / 30

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

6 / 30

6. A satellite with an inclination of is in:

7 / 30

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

8 / 30

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

9 / 30

9. How does weightlessness help in biological experiments aboard the ISS?

10 / 30

10. Why can a skydiver experience near weightlessness during free fall?

11 / 30

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

12 / 30

12. What happens to the value of as altitude becomes very large compared to Earth’s radius?

13 / 30

13. In the equation , what does represent?

14 / 30

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

15 / 30

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

16 / 30

16. Which expression is used to calculate the escape speed from the surface of a planet of mass and radius ?

17 / 30

17. Why is gravitation considered a universal force?

18 / 30

18. Kepler’s Second Law can be derived from which principle of physics?

19 / 30

19. By what percentage does decrease at an altitude of 1000 km above Earth’s surface? (Take ).

20 / 30

20. Who was the first scientist to propose the universal law of gravitation?

21 / 30

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

22 / 30

22. Inside a spherical shell of uniform mass distribution, the gravitational field is:

23 / 30

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

24 / 30

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

25 / 30

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

26 / 30

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

27 / 30

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

28 / 30

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

29 / 30

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

30 / 30

30. How does Earth’s rotation affect the value of ?

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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 is the connection between escape speed and black holes?

2 / 50

2. How does weightlessness help in biological experiments aboard the ISS?

3 / 50

3. If the total mechanical energy of a satellite is doubled (less negative), what happens to its orbit?

4 / 50

4. Which method can be used to measure small variations of at different locations on Earth?

5 / 50

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

6 / 50

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

7 / 50

7. Why are polar satellites ideal for Earth observation missions?

8 / 50

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

9 / 50

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

10 / 50

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

11 / 50

11. When a body attains escape speed, its total energy becomes:

12 / 50

12. What is the real cause of weightlessness in space travel?

13 / 50

13. Which of the following factors does NOT affect the value of on Earth?

14 / 50

14. Why are geostationary satellites ideal for communication?

15 / 50

15. How does gravitation affect tides on Earth?

16 / 50

16. Which of the following is true about kinetic energy of an orbiting satellite?

17 / 50

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

18 / 50

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

19 / 50

19. 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?

20 / 50

20. Which of the following sectors benefits most from polar satellite data?

21 / 50

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

22 / 50

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

23 / 50

23. Which maneuver is commonly used to transfer satellites between two circular orbits using minimum energy?

24 / 50

24. Why is the inverse-square law form essential in the gravitational formula?

25 / 50

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

26 / 50

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

27 / 50

27. Which condition must be satisfied for a body to escape Earth’s gravitational field?

28 / 50

28. The gravitational force between two bodies will become four times if:

29 / 50

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

30 / 50

30. Which satellite helps in Earth resource management such as agriculture and forestry?

31 / 50

31. What is the significance of geostationary orbit?

32 / 50

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

33 / 50

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

34 / 50

34. Which of the following correctly compares gravity at poles () and equator ()?

35 / 50

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

36 / 50

36. Which of the following is an application of weightlessness in space exploration?

37 / 50

37. Why is accurate measurement of significant in physics and engineering?

38 / 50

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

39 / 50

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

40 / 50

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

41 / 50

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

42 / 50

42. The orbital velocity of a satellite at a distance from Earth’s center is:

43 / 50

43. Why is gravitational potential energy negative in the formula ?

44 / 50

44. What is the order of magnitude of the gravitational force Cavendish measured between the lead spheres?

45 / 50

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

46 / 50

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

47 / 50

47. What happens to the value of as altitude becomes very large compared to Earth’s radius?

48 / 50

48. What is the relation between orbital speed and escape speed at the same distance ?

49 / 50

49. If a satellite loses mechanical energy due to atmospheric drag, what will happen to its orbit?

50 / 50

50. What does the term “weightlessness” mean?

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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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