JEE Main 20244 Apr, Evening shiftPhysicsMediumAtoms and Nuclei183× since 2002According to Bohr's theory, the moment of momentum of an electron revolving in 4th 4^{\text {th }}4th orbit of hydrogen atom is:AOption A. 2hπ2 \frac{h}{\pi}2πhBOption B. h2π\frac{h}{2 \pi}2πhCOption C. hπ\frac{h}{\pi}πhDOption D. 8hπ8 \frac{h}{\pi}8πhCheckSkip · show solution