Class 11 Physics — Chapter 8: Gravitation
66 practice questions · 22 Easy · 22 Medium · 22 Hard
Practise Class 11 Physics Chapter 8, "Gravitation", with 66 NCERT-aligned multiple-choice questions. The set is split into 22 Easy, 22 Medium and 22 Hard questions, so you can warm up on the fundamentals and then push into the exam-level problems that separate top scorers in CBSE Board exams, JEE Main, JEE Advanced and NEET UG.
"Gravitation" is one of the chapters where numerical problem-solving, derivations and conceptual application really pays off. Each MCQ on this chapter is timed and uses exam-grade marking (+2 correct, −1 wrong, 0 skipped), training the same accuracy-under-pressure that real papers demand. Every question carries a short explanation, so a wrong answer becomes a quick lesson rather than a dead end — the fastest way to close gaps before a test.
Use this chapter as targeted revision: attempt the Easy set first to confirm your basics on Gravitation, then move to Medium and Hard to test application and problem-solving. Your accuracy, streaks and XP save automatically, and the chapter feeds into your overall Class 11 Physics mastery score. A few sample questions are shown below; sign in free to practise all 66.
Key concepts: Gravitation (Class 11 Physics)
This chapter covers the universal law of gravitation, Kepler's laws, gravitational potential energy, and the motion of satellites including escape velocity.
- Universal law of gravitation
- F = Gm₁m₂/r²; G is the universal gravitational constant.
- Kepler's laws
- Orbits are ellipses (law of orbits); equal areas in equal times (law of areas); T² ∝ a³ (law of periods).
- Variation of g
- Acceleration due to gravity decreases with altitude and depth and varies with latitude.
- Gravitational PE & potential
- PE = −GMm/r; gravitational potential V = −GM/r (zero at infinity).
- Satellites
- Orbital velocity v = √(GM/r); escape velocity v_e = √(2GM/R) ≈ 11.2 km/s for Earth.
Key formulas — Gravitation
💡 Exam tips for Gravitation
- Escape velocity is √2 times the orbital velocity at the surface — a quick relation to remember.
- Gravitational potential energy is negative and zero at infinity (the reference point).
Sample questions
Newton's law of gravitation: F =
Inverse-square law.
Escape velocity from Earth's surface (approx):
v_e = √(2gR) ≈ 11.2 km/s.
Kepler's third law: T² ∝
T² ∝ a³ (semi-major axis).
Gravitation — FAQs
What are the key concepts in Class 11 Physics Gravitation?+
This chapter covers the universal law of gravitation, Kepler's laws, gravitational potential energy, and the motion of satellites including escape velocity. Key ideas include Universal law of gravitation, Kepler's laws, Variation of g, Gravitational PE & potential, Satellites.
What does Class 11 Physics Chapter 8 (Gravitation) cover on XamBaaz?+
It covers 66 NCERT-aligned MCQs on "Gravitation" — 22 Easy, 22 Medium and 22 Hard — each with a timed quiz and an instant explanation, suitable for CBSE Board exams, JEE Main, JEE Advanced and NEET UG.
Are these "Gravitation" questions free to practise?+
Yes — sign in with Google to practise "Gravitation" free. Full unlimited access is ₹999/year (limited-time launch price), with no per-chapter charges.
How should I revise "Gravitation" for the exam?+
Start with the Easy quiz to confirm your fundamentals, then attempt Medium and Hard for application-level practice. Review each explanation, retry the questions you miss, and track your accuracy on this chapter until it is consistently high.
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