A) 1 J
B) \[\frac{2}{3}J\]
C) \[\frac{3}{2}J\]
D) 4 J
Correct Answer: B
Solution :
\[E=\frac{{{P}^{2}}}{2m}=\frac{4}{2\times 3}=\frac{2}{3}J\]
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