A ray of laser of a wavelength 630 nm is...

A ray of laser of a wavelength 630 nm is incident at an angle of `30^(@)` at the diamond-air interface. It is going from diamond to air. The refractive index of diamond is 2.42 and that of air is 1. Choose the correct option

A

angle of refraction is `24.41^(@)`

B

angle of refraction is `30^(@)`

C

refraction is not possible

D

angle of refraction is `53.4^(@)`

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