In the Bohr model of a hydrogen atom, the centripetal force is furnished by the coulomb attraction between the proton and the electron. If `a_(0)` is the radius of the ground state orbit, m is the mass, e is the charge on the elytron and `epsilon_(0)` is the vacuum permittivity, the speed of the electron is :

Options

A. Zero
B. `(e)/(sqrt(epsilon_(0)a_(0)m))`
C. `(e)/(sqrt(4 pi epsilon_(0)a_(0)m))`
D. `(sqrt(4 epsilon_(0)a_(0)m))/(e)`

Answer

C