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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

Good luck! 👍

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. Why are polar satellites often used in Earth observation missions?

2 / 30

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

3 / 30

3. If the potential at Earth’s surface is , then the work done in bringing a unit mass from infinity to Earth’s surface is:

4 / 30

4. At a depth equal to half of Earth’s radius, the value of is:

5 / 30

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

6 / 30

6. If a satellite of mass 1000 kg is shifted from orbit to , the required energy is proportional to:

7 / 30

7. Gravitational self-energy of Earth is about:

8 / 30

8. Why does Earth retain its atmosphere while the Moon does not?

9 / 30

9. Which of the following best describes the cause of weightlessness in satellites?

10 / 30

10. The self-energy of a sphere of density , radius , is given by:

11 / 30

11. What does the term “weightlessness” mean?

12 / 30

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

13 / 30

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

14 / 30

14. Which of the following uses the concept of variation of with latitude?

15 / 30

15. Why is the definition of significant in gravitational studies?

16 / 30

16. What happens to escape speed if potential energy is doubled (keeping radius constant)?

17 / 30

17. Which application of weightlessness is directly used in protein crystal growth research?

18 / 30

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

19 / 30

19. Which equation explains why objects inside an orbiting satellite experience weightlessness?

20 / 30

20. Why does a diver jumping off a high diving board feel weightless momentarily?

21 / 30

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

22 / 30

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

23 / 30

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

24 / 30

24. At the surface of a uniform solid sphere of radius , what is the expression for gravitational field?

25 / 30

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

26 / 30

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

27 / 30

27. Why are geostationary satellites ideal for communication?

28 / 30

28. What is the gravitational potential energy of a body of mass at Earth’s surface?

29 / 30

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

30 / 30

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

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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. Escape speed is derived by equating which two forms of energy?

2 / 50

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

3 / 50

3. How is measured in modern laboratories with high precision?

4 / 50

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

5 / 50

5. What is the gravitational constant commonly known as?

6 / 50

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

7 / 50

7. Which mathematical relation combines Newton’s Law of Gravitation with Kepler’s Third Law?

8 / 50

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

9 / 50

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

10 / 50

10. What happens to total mechanical energy of a satellite in elliptical orbit?

11 / 50

11. Which application of weightlessness is directly used in protein crystal growth research?

12 / 50

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

13 / 50

13. At what approximate altitude above Earth’s surface are geostationary satellites placed?

14 / 50

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

15 / 50

15. A satellite with an inclination of is in:

16 / 50

16. A planet has radius and density . Its gravitational self-energy is proportional to:

17 / 50

17. If the orbital radius of a satellite increases, its orbital velocity will:

18 / 50

18. The energy required to transfer a satellite of mass from an orbit of radius to is:

19 / 50

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

20 / 50

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

21 / 50

21. What happens to the kinetic energy of a satellite when it is moved to a higher orbit?

22 / 50

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

23 / 50

23. The Law of Universal Gravitation applies to:

24 / 50

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

25 / 50

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

26 / 50

26. If the density of a sphere doubles and radius doubles, the new self-energy compared to the old is:

27 / 50

27. The ratio of self-energy of Earth to that of Moon is approximately (take , ):

28 / 50

28. Which polar satellite application is crucial for climate change research?

29 / 50

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

30 / 50

30. What is the significance of geostationary orbit?

31 / 50

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

32 / 50

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

33 / 50

33. Which statement correctly describes the work done by gravity when an object falls freely?

34 / 50

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

35 / 50

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

36 / 50

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

37 / 50

37. If the orbital radius of a satellite doubles, its kinetic energy becomes:

38 / 50

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

39 / 50

39. How does escape speed affect the possibility of human colonization on other planets?

40 / 50

40. What is the defining characteristic of a polar satellite?

41 / 50

41. How do geostationary satellites contribute to disaster management?

42 / 50

42. Why is considered fundamental in all gravitational calculations?

43 / 50

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

44 / 50

44. In which situation will an astronaut NOT feel weightless?

45 / 50

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

46 / 50

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

47 / 50

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

48 / 50

48. Which of the following best describes the cause of weightlessness in satellites?

49 / 50

49. For a uniform density sphere, the gravitational potential at center is related to self-energy by:

50 / 50

50. The binding energy of a star is numerically equal to:

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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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