How do I calculate the angle of incidence?

A ray of monochromatic light ( f = 5.09 × 1014 Hz) passes from air into Lucite at an angle of incidence of 37˚?

  • A ray of monochromatic light ( f = 5.09 × 1014 Hz) passes from air into Lucite at an angle of incidence of 37˚. Calculate the angle of refraction in the Lucite. Just need an answer! Thank you

  • Answer:

    In order to solve the prob you need to know the refractive index u of 'Lucite' at the frequency of interest. Then you can calculate the angle of refraction (r) from that of incidence (i) using Snell's law: u = sin(i)/sin(r)

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