Q. The quantum numbers + $\frac{1}{2}$ and $- \frac{1}{2}$ for an electron represent
A) Rotation of electron in clockwise and anticlockwise direction respectively
B) Rotation of electron in anticlockwise and clockwise direction respectively
C) Magnetic moment of electron pointing up and down respectively
D) Two quantum mechanical spin states which have no classical analogue
Explanation
(d)
$+ \frac{1}{2}$ and $- \frac{1}{2}$ spinning produces angular momentum equal to $Z -$ component of angular momentum which is given as $m_{s}(h/2\pi)$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.