Q1 of 50 Page 43

If the absolute refractive indices of water, benzene, and sapphire are 1.33, 1.50 and 1.77 respectively, then which medium has maximum relative refractive index?

The relative refractive index between a pair of media is the ratio of their absolute refractive indices.

Let n1 = absolute refractive index of water; n2 = absolute refractive index of benzene; n3 = absolute refractive index of sapphire.


Thus,






It can be seen that n31 is maximum and corresponds to refractive index of sapphire relative to water.

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