If \( g_{h} \) and \( g_{d} \) be the accelerations due to gravity at a height \( P \) \( h \) a...

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If \( g_{h} \) and \( g_{d} \) be the accelerations due to gravity at a height
\( P \) \( h \) and at depth \( d \), above and below the surface of earth W respectively. Assuming \( hR \) and \( dR \) and if \( g_{h}=g_{d} \) then :
(A) \( d=h \)
(B) \( d=2 h \)
(C) \( h=2 d \)
(D) Data is insufficient to arrive at a conclusion.
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