The radius of first orbit of hydrogen atom is $0.53 A^{\circ}$ and the electron is executing $6.54 \times 10^5$ revolutions per second . The magnetic moment of electron will be

Question

$\begin{array}{1 1} 9.3 \times 10^{-24} Amp m^2 \\ 6.54 \times 10^{-27}Ampm^2\\ 6.54 \times 10^{-24}Ampm^2 \\ 5.3 \times 10^{-24}Ampm^2\end{array}$