Question

Select One Option Correct from the following : Imagine a light planet revolving around a very massive star in a circular orbit of radius R with a period of revolution T . If the gravitational force of attraction between the planet and the star is proportional to $R^{-5/2}$ ,then,
(A)$T ^{2} \propto R^{2}$
(B)$T ^{2} \propto R^{7/2}$
(C)$T ^{2} \propto R^{3/2}$
(D)$T ^{2} \propto R^{3.75}$

Answer 1

d option is correct.
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