question_answer

The ratio of speed of an electron in ground state in Bohrs first orbit of hydrogen atom to velocity of light in air is [MH CET 2002]

A)            \[\frac{{{e}^{2}}}{2{{\varepsilon }_{0}}hc}\]              

B)            \[\frac{2{{e}^{2}}{{\varepsilon }_{0}}}{hc}\]

C)            \[\frac{{{e}^{3}}}{2{{\varepsilon }_{0}}hc}\]              

D)            \[\frac{2{{\varepsilon }_{0}}hc}{{{e}^{2}}}\]