NEET UG PHYSICS MCQ: GRAVITATION

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Analyzing +4 | -1

Kepler's third law states that the square of period of revolution (

T

) of a planet around the sun is proportional to the third power of average distance,

r

between the sun and the planet i.e.

{T}^2={Kr}^3

. Here,

{K}

is constant. If masses of the sun and the planet are

{M}

and

{m}

respectively, then as per Newton's law of gravitation force of attraction between them is

F=\frac{G M m}{r^2}

, where

{G}

is gravitational constant. The relation between

{G}

and

{K}

is described as

View answer and explanation

Correct option: B

G M K=4 \pi^2

Option B (

G M K=4 \pi^2

) is correct because Kepler's third law relates the period of revolution to the orbital radius and the gravitational constant.

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