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The correct variation of gravitational p...

The correct variation of gravitational potential `V` with radius `r` measured from the centre of earth of radius `R` is given by

A

B

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D

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The correct Answer is:
B
`V(r)=-(GM)/(r),r ge R=-(GM)/(2R^(3))(3R^(2)-r^(2)),r lt R`
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