If radius of earth is \( R \) then the height ' \( h \) ' at which value of ' \( g \) ' becomes ...

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If radius of earth is \( R \) then the height ' \( h \) ' at which value of ' \( g \) ' becomes one-fourth is
[BHU 2000; Similar ISM Dhanbad 1994;
EAMCET (Engg.) 2000; KCET 2007; AIEEE 2009]
(a) \( \frac{R}{4} \)
(b) \( \frac{3 R}{4} \)
(c) \( R \)
(d) \( \frac{R}{8} \)
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