A) 165 Hz
B) 150 Hz
C) 660 Hz
D) 330 Hz
Correct Answer: C
Solution :
Phase difference =\[\frac{2\pi }{\lambda }\times \] path difference Þ\[1.6\pi =\frac{2\pi }{\lambda }\times 40\]\[\Rightarrow \]\[\lambda =50\]\[cm\]= 0.5m Þ \[v=n\lambda \]Þ \[330=0.5\times n\Rightarrow n=660\,Hz\]You need to login to perform this action.
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