A satellite is revolving in a circular orbit at a height ' \( h \) ...

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A satellite is revolving in a circular orbit at a height ' \( h \) ' from the earth's surface (radius of earth \( \mathrm{R} ; \mathrm{h}\mathrm{R} \) ). The minimum increase in its orbital velocity required, so that the satellite could escape from the earth's
\( \mathrm{P} \) gravitational field, is close to: (Neglect the effect of atmosphere.)
(A) \( \sqrt{\mathrm{gR}}(\sqrt{2}-1) \)
(B) \( \sqrt{2 g R} \)
(C) \( \sqrt{\mathrm{gR}} \)
(D) \( \sqrt{\mathrm{gR} / 2} \)
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