Question

A ray of light travelling from air enters a liquid at an angel of 45degrees with the normal if the corresponding Angle of refraction 30 degrees, then the refractive index of the liquid with respect at air is

Answer 1

Sin i / sin r = refractive index
= Sin 45 / sin 30
= 1/root2 / 1/2
= 2 / root2
= root2 or 1.414

Ans. The refractive index of the liquid with respect to air is 1.414

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