A body moves in a circular orbit of radius R under the action of a central force. Potential due to the central force is given by V(r) = kr (k is a positive constant). Period of revolution of the body is proportional to-

Options

A. `R ^(1//2)`
B. `R ^(-1//2)`
C. `R ^(-3//2)`
D. `R ^(-5//2)`

Answer

A