A light ray of wavelength 450 nm in air is incident on plane surface of a transparent medium at angle of incidence 60 As it

Question

A light ray of wavelength 450 nm in air is incident on plane surface of a transparent medium at angle of incidence 60 As it enters it deviates by 15 towards normal The wavelength of light in the medium is O 450 nm O 367 nm O 551 nm O 313 nm hm

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