A ray of monochromatic light is incident on one refracting face of a prism of angle `75^(@)`. It passes through the prism and is incident on the other face at the critical angle. If the refractive index of the material of the prism is `sqrt2` , the angle of incidence on the first face of the prism isA. `30^(@)`B. `45^(@)`C. `60^(@)`D. `0^(@)`

A ray of monochromatic light is incident on one refracting face of a p

1.	A ray of monochromatic light is incident on one refracting face of a prism of angle `75^(@)`. It passes through the prism and is incident on the other face at the critical angle. If the refractive index of the material of the prism is `sqrt2` , the angle of incidence on the first face of the prism isA. `30^(@)`B. `45^(@)`C. `60^(@)`D. `0^(@)`
Answer» Correct Answer - b

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