A light ray incidents normally on one surface of an equilateral prism. The angle of deviation of the light ray is (refractive index of the material of the prism 
)
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
A
Given, 
So, 
angle of refraction at surface 1 
Now, 
,
angle of refraction at surface 2
But, 
So, 
So, light is incident at more than critical angle.
So, it will totally reflect fact
Deviation angle 
(in magnitude)
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