The reflected ray is found to be completely polarised when sunlight is incident on water surface at an angle of incident 
and 
. Now choose the correct pair from the given below.
A
The angle of refraction when 
angle of incident ray is 
angle of incident ray is
C
The angle of refraction when 
angle of incident ray is 
angle of incident ray is
D
The refractive index of water 
when angle of incident ray is 
when angle of incident ray is
Text Solution
Verified by ExpertsThe correct answer is:
B
Here, reflected ray and refracted ray are mutually perpendicular to each other.
When angle of incident ray is 
= 
According to Brewster's law refractive index, 
when angle of incident ray is 
and refractive index, 
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