A) \[\frac{2eV}{m}\]
B) \[\sqrt{\frac{2eV}{m}}\]
C) \[\sqrt{\frac{2m}{eV}}\]
D) \[\frac{{{V}^{2}}}{2em}\]
Correct Answer: B
Solution :
\[eV=\frac{1}{2}m{{v}^{2}}\Rightarrow {{v}^{2}}=\frac{2eV}{m}\Rightarrow v=\sqrt{\frac{2eV}{m}}\]
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