A thin layer of SiO, having an index of refraction of 1.45 is used as a coating on a solar ceil. The refractive index of the cell itself is 3.5. (The wavelength in air of visible light is from 400 nm to 700 nm.) (a) What is the minimum thickness of the coating needed to cancel visible light of wavelength 400 nm in the light reflected from the coating into air? re any other visible wavelengths also canceled for this thickness? (b) Suppose that technological limitations require you to make the coating 3 times as thick as in part (a). Which, if any, visible wavelengths in the reflected light will be canceled? (c) For the thickness in part (b), which if any visible wavelengths will be reinforced?