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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

`g = 0`

B

`g = - (GM)/(r^(2))`

C

`V = 0`

D

`V = - (GM)/(a)`

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The correct Answer is:
A, D
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