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There is a concentric hole of radius R i...

There is a concentric hole of radius R in a solid sphere of radius 2R . Mass of the remaining portions is M . What is the gravitational potential at centre ?

A

`-(5GM)/(7R)`

B

`-(7GM)/(14R)`

C

`-(3GM)/(7R)`

D

`-(9GM)/(14R)`

Text Solution

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The correct Answer is:
D
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