An earth satellite of mass m revolves in a circular orbit at a height h from the surface of the earth. R is the radius of the earth and g is acceleration due to gravity at the surface of the earth. The velocity of the satellite in the orbit is given by [NCERT 1983; AIEEE 2004]

• A. \[\frac{g{{R}^{2}}}{R+h}\]
• B. Gr
• C. \[\frac{gR}{R+h}\]
• D. \[\sqrt{\frac{g{{R}^{2}}}{R+h}}\]