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]

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

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

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

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

The ratio of speed of an electron in ground state in Bohrs first orbit

1.	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.	270 W
D.	\[\frac{2{{\varepsilon }_{0}}hc}{{{e}^{2}}}\]
Answer» B. \[\frac{2{{e}^{2}}{{\varepsilon }_{0}}}{hc}\]