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A ray of ligth is incident on a glass sl...

A ray of ligth is incident on a glass slab making an angle of `60^@` with the surface. Calculate the angle of refraction in glass if the refractive index of glass is 1.5

A

`sin^-1 (1//3)`

B

`30^@`

C

`45^@`

D

`50^@`

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The correct Answer is:
A
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