A) \[\frac{eJ}{m}\]
B) \[\frac{eJ}{2m}\]
C) \[eJ\,2m\]
D) \[\frac{2m}{eJ}\]
Correct Answer: B
Solution :
[b] We know that, \[\frac{M}{J}=\frac{q}{2m}\] \[\therefore \,\,\,M=J\times \frac{e}{2m}\]
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