A) 0.25\[\times \]10?10 \[s\]
B) \[0.167\times {{10}^{-7}}\]\[s\]
C) \[2.5\times {{10}^{-10}}\]\[s\]
D) \[1.0\times {{10}^{-10}}\]\[s\]
Correct Answer: A
Solution :
\[t=\frac{\mu x}{c}=\frac{\frac{3}{2}\times 5\times {{10}^{-3}}}{3\times {{10}^{8}}}=0.25\times {{10}^{-10}}s\]
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