Refraction of Light

Refraction of Light problem 21

The refractive index also depends slightly on the color of light (wavelength). A ray of violet light and a ray of red light pass from the water towards the air. At what angle relative to the perpendicular to the water surface must the rays be incident in order to see the red ray in the air and not the violet ray? The refractive index of violet light is 1.341 and that of red light is 1.330.


material editor: Joanah Frank