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If the mass of earth were 4 times the pr...

If the mass of earth were `4` times the present mass, the mass of the moon were half the present mass and the moon were revolving around the earth at twice the present distance, the time period of revolution of the moon would be (Indays)

A

`56sqrt(2)`

B

`28sqrt(2)`

C

`14sqrt(2)`

D

`7sqrt(2)`

Text Solution

Verified by Experts

The correct Answer is:
B
`T(2)=4pi^(2)(r^(3))/(GM)rArr Talphasqrt((r^(3))/(M))`
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