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Assertion : A body falling freely under the force of gravity has constant acceleration (9.81 m/sec2).
Reason : Earth attracts every body towards its centre by the same force.

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Important Questions on Gravitation

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Beta Question Bank for Medical: Physics>Chapter 11 - Gravitation>Exercise (Assertion & Reason)>Q 18
Assertion : A body kept inside a spherical shell does not experience any gravitational force.
Reason : The body inside a spherical shell is protected from the gravitational attraction of bodies outside the shell.
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Beta Question Bank for Medical: Physics>Chapter 11 - Gravitation>Exercise (Assertion & Reason)>Q 19
Assertion : If value of acceleration due to gravity of a planet is lesser than earth then escape velocity from planet is lesser too.
Reason : Escape velocity just depends only on acceleration due to gravity.
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Beta Question Bank for Medical: Physics>Chapter 11 - Gravitation>Exercise (Assertion & Reason)>Q 20
Assertion : If gravitational force is proportional to 1R3 then Kepler's second law would not be affected.
Reason : For Keplar’s second law, central nature of force is the only condition.