A) \[\sqrt{\frac{eV}{m}}\]
B) \[\sqrt{\frac{2eV}{m}}\]
C) \[\sqrt{\frac{eV}{2m}}\]
D) \[\sqrt{\frac{m}{2eV}}\]
Correct Answer: B
Solution :
If v is the velocity attained by electron, then \[\frac{1}{2}m{{v}^{2}}=eV\] \[v=\sqrt{\frac{2eV}{m}}\]
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