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

A ray of light falls on a transparent slab of `mu = 1.0`. If reflected and refracted rays are mutually perpendicular, what is the angle of incidence ?

A

`45^(@)`

B

`60^(@)`

C

`30^(@)`

D

`90^(@)`

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The correct Answer is:
A
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PRADEEP-OPTICS-Exercise
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