Q. According to Bohr’s theory, the moment of momentum of an electron revolving in second orbit of hydrogen atom will be
A) $2\pi h$
B) $\pi h$
C) $\frac{h}{\pi}$
D) $\frac{2h}{\pi}$
Explanation
(c) Angular momentum
$= n\left( \frac{h}{2\pi} \right) = 2\left( \frac{h}{2\pi} \right) = \frac{h}{\pi}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.