The formula for critical velocity is :

\sqrt{2 R g}

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\frac{R}{g}

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\frac{3 R}{2 g}

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\sqrt{R g}

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Solution

The correct option is C $\sqrt{R g}$
The velocity required to put a satellite in its orbit around a planet is called critical velocity .The critical velocity or orbital velocity of a satellite of planet of radius $R$ is given by $v_{o} = \sqrt{g R}$

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