A) \[\frac{\pi }{h}\]
B) \[\frac{h}{\pi }\]
C) \[\frac{h}{2\pi }\]
D) \[\frac{2\pi }{h}\]
Correct Answer: C
Solution :
Angular momentum of electron in nth orbit is given by \[mv{{r}_{n}}=\frac{nh}{2\pi },\] In the lowest energy level, n = 1 Then, \[mv{{r}_{1}}=1\left( \frac{h}{2\pi } \right)\] \[mv{{r}_{1}}=\frac{h}{2\pi }\]
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