question_answer

 If V, R and g denote respectively the escape velocity from the surface of the earth radius of the earth, and acceleration due to gravity, then the correct equation is          [MP PMT 2004]

A)             \[V=\sqrt{gR}\]          

B)               \[V=\sqrt{\frac{4}{3}g{{R}^{3}}}\]

C)             \[V=R\sqrt{g}\]

D)               \[V=\sqrt{2gR}\]