Задача 40779.

In the film (n = 1,5) thickness d = 0,1 mm falls parallel beam of white light at an angle alpha. What color is painted with light reflecting film, if the angle of incidence is 30 ° and 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 to address, please. I try to help.