Problem

Problem

A light ray of frequency ν\nu and wavelength λ\lambda enters a liquid of refractive index 3/23/2 . The ray travels in the liquid with (1) frequency ν\nu and wavelength (23)λ\left(\frac{2}{3}\right)\lambda (2) frequency ν\nu and wavelength (32)λ\left(\frac{3}{2}\right)\lambda (3) frequency ν\nu and wavelength λ\lambda (4) frequency (32)ν\left(\frac{3}{2}\right)\nu and wavelength λ\lambda

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