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What will be velocity of a satellite rev...

What will be velocity of a satellite revolving around the earth at a height h above surface of earth if radius of earth is R :-

A

`R^(2) sqrt(g/(R+h))`

B

`R g/((R+h)^(2))`

C

`R sqrt(g/(R+h))`

D

`R sqrt((R+h)/g)`

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The correct Answer is:
C
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