Assertion : A body falling freely under the force of gravity has constant acceleration (9.81 m/sec 2 ). Reason : Earth attracts every body towards its centre by the same force.

If both Assertion & Reason are False

If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion

If both Assertion & Reason are True but Reason is not a correct explanation of the Assertion

If Assertion is True but the Reason is False

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Assertion: Gravitational potential is maximum at infinity.
Reason: Gravitational potential is the amount of work done to shift a unit mass from infinity to a given point in gravitational attraction force field.

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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 10

Assertion : A person feels weightlessness in an artificial satellite of the earth. However a person on the moon (natural satellite) feels his weight.
Reason : Artificial satellite is a freely falling body and on the moon surface, the weight is mainly due to moon’s gravitational attraction.

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Beta Question Bank for Medical: Physics>Chapter 11 - Gravitation>Exercise (Assertion & Reason)>Q 13

Assertion : The gravitational field of moon is much less than that of earth.
Reason : Gravitational field of a given mass (

M

) depends upon

\frac{M}{r^{2}}

, which is smaller for moon.

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Beta Question Bank for Medical: Physics>Chapter 11 - Gravitation>Exercise (Assertion & Reason)>Q 14

Assertion : In keplar’s law conservation of angular momentum does not take place.
Reason : Gravitation force acting between earth and the sun is perpendicular to line joining them.

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Beta Question Bank for Medical: Physics>Chapter 11 - Gravitation>Exercise (Assertion & Reason)>Q 15

Assertion: On decreasing the distance between two masses potential energy increases.
Reason : Potential energy

U = \frac{G M m}{r}

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Beta Question Bank for Medical: Physics>Chapter 11 - Gravitation>Exercise (Assertion & Reason)>Q 16

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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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

\frac{1}{R^{3}}

then Kepler's second law would not be affected.
Reason : For Keplar’s second law, central nature of force is the only condition.

Assertion: Gravitational potential is maximum at infinity. Reason: Gravitational potential is the amount of work done to shift a unit mass from infinity to a given point in gravitational attraction force field.

Important Questions on Gravitation

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Assertion: Gravitational potential is maximum at infinity.
Reason: Gravitational potential is the amount of work done to shift a unit mass from infinity to a given point in gravitational attraction force field.