A) 0.2 mm
B) 0.4 mm
C) 0.5 mm
D) 0.6 mm
Correct Answer: C
Solution :
In water \[\lambda \] is reduced to \[\frac{\lambda }{\mu }\] so \[\lambda =\frac{\lambda }{1.6}\] As \[\omega =\frac{D\lambda }{d}\propto \lambda \] \[\frac{\omega }{\omega }=\frac{\lambda }{\lambda }=\frac{\lambda \text{/}16}{\lambda }\] or \[\omega =\frac{0.8}{1.6}=0.5\,mm\]You need to login to perform this action.
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