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A ray of light falls on a transparent g...

A ray of light falls on a transparent glass slab of refractive index 1.53 . If the reflected ray is perpendicular to the refracted ray , then the angle of incidence is approximately equal to

A

` 28^(@)`

B

`38^(@)`

C

`48^(@)`

D

`57^(@)`

Text Solution

Verified by Experts

The correct Answer is:
D
`n=tan i:. i=tan^(-1)(n)=tan^(-1)(1.53)=57^(@)`
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