The depth d at which the value of accele...

The depth d at which the value of acceleration due to gravity becomes `1/n` times the value at the earth's surface is [R=radius of earth]

A

`d=R(n/n-1)`

B

`d=R(n-1/2n)`

C

`d=R(n-1/n)`

D

`d=R^2 (n-1/n)`

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