A light ray is incident perpendicularly to one face to a 90º prism and is totally internally reflected at the glass-air interface. If the angle of reflection is 45º, we conclude that the refractive index n is
A
n < 
B
n > 
C
n > 
D
n < 
Text Solution
Verified by ExpertsThe correct answer is:
B
i > c for ITR
∴ 45º > sin –1 
⇒ n > 
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