question_answer

If a body describes a circular motion under inverse square field, the time taken to complete one revolution T is related to the radius of the circular orbit as [NCERT 1975; RPMT 2000]

A)             \[T\propto r\]   

B)             \[T\propto {{r}^{2}}\]

C)             \[{{T}^{2}}\propto {{r}^{3}}\]

D)               \[T\propto {{r}^{4}}\]