MCQ
The angular momentum of electron in $n ^{\text {th }}$ orbit is given by
- Anh
- B$\frac{h}{2 \pi n}$
- ✓$n \frac{h}{2 \pi}$
- D$n ^2 \frac{ h }{2 \pi}$
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Reason : $N = {N_0}\,{\left( {\frac{1}{2}} \right)^n}$
where, $n = \frac{{{\rm{time\, elapsed}}}}{{{\rm{half \,life \,period}}}}$