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A satellite of mass m revolves around the earth of radius R at a height a from its surface. If g is the acceleration

A satellite of mass m revolves around the earth of radius R at a height a from its surface. If g is the acceleration due to gravity on the surface of the earth, the orbital speed of the satellite is: (A) gr (B) gR R-z (C) R R+z (D) R\1/2

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