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.

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 planet requires the greatest energy to launch a spacecraft?

2 / 30

2. Which type of orbit do polar satellites generally follow?

3 / 30

3. What was the historical significance of Cavendish’s experiment beyond finding ?

4 / 30

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

5 / 30

5. How does variation of affect aviation and space travel?

6 / 30

6. Which is the correct statement of the Law of Universal Gravitation?

7 / 30

7. The perihelion of Earth occurs in:

8 / 30

8. Which planet takes the longest time to orbit the Sun?

9 / 30

9. Kepler’s laws were derived theoretically by Newton using which fundamental law?

10 / 30

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

11 / 30

11. If Earth’s radius is , what is the orbital radius of a geostationary satellite?

12 / 30

12. What is the primary function of navigation satellites in aviation?

13 / 30

13. What is the expression for gravitational potential energy of a body of mass at height near Earth’s surface?

14 / 30

14. If the radius of a planet is doubled but its mass remains the same, the new gravitational self-energy becomes:

15 / 30

15. In the formula , what does represent?

16 / 30

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

17 / 30

17. Derivation of Kepler’s First Law from Newton’s equations shows that orbital paths can be:

18 / 30

18. According to Kepler’s Second Law, a planet moves fastest when it is at:

19 / 30

19. How is applied in astrophysics to estimate the mass of stars?

20 / 30

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

21 / 30

21. At what height above Earth’s surface will become of its surface value?

22 / 30

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

23 / 30

23. What is the gravitational potential energy of a satellite at a distance of from Earth’s center (Earth’s mass )? ()

24 / 30

24. What is the SI unit of the universal gravitational constant ?

25 / 30

25. How do weather satellites help in forecasting?

26 / 30

26. Why is the expression more general than ?

27 / 30

27. Which experiment is commonly used to measure the value of near Earth’s surface?

28 / 30

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

29 / 30

29. How does altitude affect ?

30 / 30

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

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

2 / 50

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

3 / 50

3. Which of the following ratios is constant for all planets according to Kepler’s Third Law?

4 / 50

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

5 / 50

5. Escape velocity is defined as:

6 / 50

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

7 / 50

7. Why is weightlessness advantageous in materials science experiments in orbit?

8 / 50

8. When a body is lifted against gravity, its gravitational potential energy:

9 / 50

9. What is the mathematical expression of the universal law of gravitation?

10 / 50

10. Why can fuel mixing in spacecraft be studied effectively in weightlessness?

11 / 50

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

12 / 50

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

13 / 50

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

14 / 50

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

15 / 50

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

16 / 50

16. The path of a satellite around Earth is determined by:

17 / 50

17. Which condition must hold true for a satellite to be geostationary?

18 / 50

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

19 / 50

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

20 / 50

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

21 / 50

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

22 / 50

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

23 / 50

23. What physical principle allowed Cavendish to measure such a tiny force in his experiment?

24 / 50

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

25 / 50

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

26 / 50

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

27 / 50

27. Geostationary satellites are widely used for:

28 / 50

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

29 / 50

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

30 / 50

30. What is the general formula of gravitational potential energy between two masses and separated by distance ?

31 / 50

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

32 / 50

32. Which of the following is a direct observational consequence of Kepler’s Second Law?

33 / 50

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

34 / 50

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

35 / 50

35. At high mountains, why does water boil at a lower temperature?

36 / 50

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

37 / 50

37. If Earth stopped rotating, what would happen to the value of at the equator?

38 / 50

38. The relation between gravitational field and potential is given by:

39 / 50

39. The Law of Universal Gravitation applies to:

40 / 50

40. In Kepler’s First Law, what is located at the other focus of the elliptical orbit (not occupied by the Sun)?

41 / 50

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

42 / 50

42. Why are geostationary satellites suitable for weather forecasting?

43 / 50

43. Why are polar satellites preferred for mapping and cartography?

44 / 50

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

45 / 50

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

46 / 50

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

47 / 50

47. Why is escape speed important in understanding planetary atmospheres?

48 / 50

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

49 / 50

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

50 / 50

50. What is the altitude of a geostationary satellite approximately?

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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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