A small planet is revolving around a very massive star in a circular orbit of radius R with a period of revolution T. If the gravitational force between the planet and the star were proportional to 
, then T would be proportional to
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
D
According to the question, the gravitational force between the planet and the star is 
Where M and M be masses of star and planet respectively.
For motion of planet in circular orbit,
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