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A ray of light travelling in a transpare...

A ray of light travelling in a transparent medium of refractive index n falls, on a surface separating the medium from air at an angle of incidents of `45^@`. The ray can undergo total internal reflection for the following n,

A

n= 1.25

B

n = 1.33

C

n= 1.4

D

n = 1.5

Text Solution

Verified by Experts

The correct Answer is:
D
n = 1.5
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