Every planet revolves around the sun in an elliptical orbit.
A. The force acting on a planet is inversely proportional to square of distance from sun.
B. Force acting on planet is inversely proportional to product of the masses of the planet and the sun.
C. The Centripetal force acting on the planet is directed away from the sun.
D. The square of time period of revolution of planet around sun is directly proportional to cube of semi-major axis of elliptical orbit.
Choose the correct answer from the options given below

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C and D Only

A and D only

B and C only

A and C only

answer is B.

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Detailed Solution

$F = \frac{GmM}{r^{2}}$
Force acting on a planet is inversely proportional to square of distance from sun (Statement A)
The Square of time period of revolution of planet around sun is directly proportional to cube of semi-major axis of elliptical orbit (statement D)

Force acting on planet is directly proportional to product of the masses of the planet and the sun.
The Centripetal force acting on the planet is directed towards the sun.

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