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The velocity of light in medium A is 300 km/sec and that in medium B is 200 km/sec.Calculate the refractive index of medium A with respect to medium B.(Answer should be in simplest fraction)ans asap

Answer»

refractive \: index \: of \: medium \: a \: with \: respect \: to \: medium \: b \:  =  _{a}n_{b}

_{a} n_{b} =  \frac{velocity \: of \: light \: in \: medium \: b}{velocity \: of \: light \: in \: medium \: a}

=  \frac{200}{300}

_{a}n_{b} =  \frac{2}{3}  \: or \: 0.667



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