Radio waves coming at 
to vertical are received by radar after reflection from a nearby water surface and directly. The height of the antenna from the water surface so that it records a maximum intensity, should be (wavelength = 
)
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
A
Path difference = BN + BA + 
(because reflection occurs from denser medium)
In 
…(1)
from right angle 
ANB
....(2)
Path difference = (AB + AB cos 2 
) + 
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