CBSE 11 Physics · U6
Gravitation
CBSE Class 11 Physics Unit VI: Kepler's laws, universal gravitation, acceleration due to gravity and its variation, gravitational potential and potential energy, escape speed, orbital velocity, and satellite energy.
Test yourself
A focused, distraction-free run through 25 multiple-choice questions. Hints if you need them; your score at the end.
Difficulty guide
The label describes the problem, not your ability.
1/5 - Foundational
Warm-up setup; checks one basic idea.
2/5 - Routine exam skill
Normal syllabus skill; usually one main rule or interpretation.
3/5 - Standard multi-step
Exam-style problem with multiple steps or a common trap.
4/5 - Hard exam skill
High-end exam problem; combines methods carefully.
5/5 - Challenge
Stretch problem beyond normal exam pressure.
Topic 6.1
Kepler's Laws and Universal Gravitation
Kepler's laws of planetary motion and Newton's universal law of gravitation.
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Topic 6.2
Gravitational Field and Acceleration Due to Gravity
Acceleration due to gravity as gravitational field strength and its dependence on mass and radius.
Topic 6.3
Variation of g with Altitude and Depth
Change in acceleration due to gravity above and below Earth's surface.
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Topic 6.4
Gravitational Potential and Potential Energy
Potential, potential energy, work against gravity, and sign convention with zero at infinity.
Topic 6.5
Escape Speed, Orbital Velocity and Satellite Energy
Escape speed, circular orbital velocity, total energy of an orbiting satellite, and orbital scaling.