Задача 40845.

In a thin film of glycerol with a refractive index n = 1,47, white light falls at an angle of 30 °. The reflection film seems to green light (wavelength of 0.540 um). How the film will appear in the color reflected light, if the light is incident at an angle of 60 °.

Detailed solution with a short recording conditions, laws and formulas used in the decision, the withdrawal of the calculation formula and the answer.
If you have any questions about the decision to write. I try to help.