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A planet of mass m is moving in an ellip...

A planet of mass m is moving in an elliptical orbit about the sun (mass of sun = M). The maximum and minimum distances of the planet from the sun are `r_(1)` and `r_(2)` respectively. The period of revolution of the planet wil be proportional to :

A

`r_(1)^(3//2)`

B

`r_(2)^(3//2)`

C

`(r_(1)-r_(2))^(3//2)`

D

`(r_(1)+r_(2))^(3//2)`

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The correct Answer is:
D
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