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lf change in the value of g at a depth d...

lf change in the value of g at a depth d below the surface of the earth is equal to that on the surface of the earth at latitude of angle `phi`, then,

A

`phi=cos^-1[sqrt((Romega)/gd)]`

B

`phi=cos^-1[sqrt(d/(R^2 omega^2)]`

C

`phi=cos^-1[(gd/Romega)]`

D

`phi=cos^-1[sqrt(gd)/(Romega)]`

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