Wave OpticsEasy
Question
Two towers on top of two hills are 40 km apart. The line joining them passes 50 m above a hill halfway between the towers. What is the longest wavelength of radio waves, which can be sent between the towers without appreciable diffraction effects?
Options
A.25.0 cm
B.12.5 cm
C.25 m
D.12.5 m
Solution
Maximum wavelength is given by ZF = 
λmax =
= 0.125 m = 12.5cm.
λmax =
= 0.125 m = 12.5cm.Create a free account to view solution
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