)20. a monochromatic wave passes through media of different refractive indices n. what is the impact of the media on the frequency , velocity v, wavelength 2 an

)20. A monochromatic wave passes through media of different refractive indices n. What is the impact of the media on the frequency , velocity v, wavelength 2 and wavenumber k of the monochromatic wave (A) v remains the same, vcIn, 2 n, kkan (B) v remains the same, v cn, 2 n, k kn (C) v remains the same, v c/n, 2n, k kn (D) v remains the same, v cIn, A n, k k,l n where k, is the corresponding value in vacuum

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