Question

Light of wavelength 470 nm is shone at a thin film of polymer embedded with cadmium selenide nanoparticles. The refractive index of the film is 4.2 and is surrounded on both sides by air. Find the minimum thickness of the film that will produce constructive interference as a function of the angle of incidence. Find the minimum thickness of the film that will produce destructive interference as a function of the angle of incidence. Sketch a plot of the above two functions.