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A ray of light is travelling from glass ...

A ray of light is travelling from glass to air (refractive index of glass = 1.5). The angle of incidence is `50^@`. The deviation of the ray is

A

`50^@-sin^-1[(sin^-150^@)/1.5]`

B

`sin^-1 [ (sin 50^@)*1.5] - 50^@`

C

`0^@`

D

`80^@`.

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