Consider a tank made of glass (refractive index 
) with a thick bottom. It is filled with a liquid of refractive index 
. A student finds that, irrespective of what the incident angle 
(see figure) is for a beam of light entering the liquid, the light reflected from the liquid glass interface is never completely polarized. For this to happen, the minimum value of 
is:
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
JEE Main 2019
According to Brewster's law, refractive index of material 
is equal to tangent of polarising angle
or 
i.e. minimum value of 
should
be 
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