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P is a point at a distance r from the ce...

P is a point at a distance r from the centre of a spherical shell of mass M and radius a, where `r lt a`. The gravitational potential at P is

A

`-(GM)/r`

B

`-(GM)/a`

C

`-GMr/a^2`

D

`-GM((a-r)/a^2)`

Text Solution

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The correct Answer is:
B
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