# Light passes from air into a liquid and is deviated 19° when the angle of incidence is 52°.What is the index of refraction of the liquid ?Sin 52° = 0.7880 sin 33° = 0.5446.

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so i - r = 19°

and i = 52°

so r = 52 -19 = 33°

so refractive index of the liquid = sini/sinr = sin52°/sin33° = 0.7880/0.5446 = 1.45 (approx)