A) 10 cm
B) 1.2 cm
C) 15 cm
D) 100 cm
Correct Answer: B
Solution :
Phase difference\[\frac{2\pi }{\lambda }\times \]path difference \[\begin{align} & \frac{2\pi }{3}=\frac{2\pi }{7.2}\times \Delta A\,\left\{ \lambda =\frac{\upsilon }{n}=\frac{360}{50}=7.2\,m \right\} \\ & \Delta A=1.2\,cm \\ \end{align}\]You need to login to perform this action.
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