Red light n 1520 and violet light n 1538 traveling in air, Ask an Expert

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Red light (n = 1.520) and violet light (n =1.538) traveling in air are incident on a slab of crown glass. Bothcolors enter the glass at the same angle of refraction. The redlight has an angle of incidence of 30.5°. What is the angle ofincidence of the violet light?

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