The class is about heat, waves, and light. The website wants exactly the perfect answer and in the same metric system units that are stated on the calculators that are on the picture for the question, if not, it'll mark it wrong.

Set 16 Problem 4 A lens appears greenish (A = 530 nm is strongest) when white light reflects from it. a. What minimum thickness t of coating (n = 1.23) do you think is used on such a (glass) lens? 5 7 OC t= m abc sin(x) Ox10 Submit Reset Reset All What is the phase shift for light in air reflecting from the film? For light inside the film reflecting from the glass lens? See Table 33-1 for typical values of the index of refraction of glass. What is the wavelength of light in the film? b. If the purpose of the thin film is to suppress reflections, for what wavelength of light is the coating designed to be used? (Find the wavelength in the near-infrared (700 nm - 2000 nm) part of the spectrum.) abc in(x) 1X10" Submit Reset Reset All What wavelength experiences complete destructive interference on reflection