A) \[2mm\]
B) \[2cm\]
C) 2m
D) \[2km\]
Correct Answer: A
Solution :
For vacuum \[t=n\lambda ,\] For air \[t=(n+1)\lambda \] \[\therefore \] \[t=\frac{\lambda }{n-1}=\frac{6\times {{10}^{-7}}}{0.0003}=2mm\]You need to login to perform this action.
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