Question

The rhinestones in costume jewelry are glass with index of refraction 1.50. to make them more reflective, they are often coated with a layer of silicon monoxide of index of refraction 2.00. what is the minimum coating thickness needed to ensure that light of wavelength 560 nm and of perpendicular incidence will be reflected from the two surfaces of the coating with fully constructive interference?

Answer 1

What is he minumum coating of thickness needed to ensure that lifght of waveelntght 5660 mbnd si