Given that the refractive index of diamond is 2.42 and the velocity of light in air 3.0 X 10^{8} m/s,calculate the velocity of light in diamond.

n=speed of light in vacuum /speed of light in mediumn=c/v2.42=3x10^8/speed of lightSpeed of light =3x10^{8}/2.42=1.25x10^{8} m/s

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