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A ray of light is incident on a surface ...

A ray of light is incident on a surface of glass slab at `45^@`, If lateral shift produced per unit thickness is `1//sqrt3 m`, the angle of refraction produced is

A

`tan^-1 sqrt(2/(sqrt3 -1))`

B

`tan^-1 (sqrt3/2)`

C

`tan^-1(1-sqrt(2//3))`

D

`sin^-1 (1-sqrt(2//3))`.

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