A particle of charge `-q` and mass `m` moves in a circular orbits of radius `r` about a fixed charge `+Q`.The relation between the radius of the orbit `r` and the time period `T` is

Options

A. `r=(Qq)/(16pi^(2)epsilon_(0)M)T^(3)`
B. `r^(3)=(Qq)/(16pi^(2)epsilon_(0)M)T^(2)`
C. `r^(2)=(Qq)/(16pi^(3)epsilon_(0)m)T^(3)`
D. `r^(2)=(Qq)/(16pi^(3)epsilon_(0)m)T^(3)`

Answer

2