An artificial satellite is moving in a circular orbit around the earth with a speed equal to half the magnitude of escape velocity from the surface of earth. R is the radius of earth and g is acceleration due to gravity at the surface of earth. (R=6400 km)
The time period of revolution of satellite in the given orbit is
(A) 2πg2R
(B) 2πg4R
(C) 2πg8R
(D) 2πg6R