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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. Both colors enter the glass at the same angle of refraction. The red light has an angle of incidence of 26.50°. What is the angle of incidence of the violet light?

  • Physics -

    snells law
    sin Incidence= n*sinrefraction

    so, then
    1= nred/nviolet * sin26.5/sinTheta

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