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In total internal reflection when the an...

In total internal reflection when the angle of incidence is equal to the critical angle for the pair of media in contant, what will be angle of refraction ?

A

`90^@`

B

`120^@`

C

`0^@`

D

equal to angle of incidence

Text Solution

Verified by Experts

The correct Answer is:
A
Ray incident at critical angle will be refractd at `90^@`.
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