You are standing in air and are looking at a fl at piece
Chapter , Problem 12(choose chapter or problem)
You are standing in air and are looking at a fl at piece of glass (n 5 1.52) on which there is a layer of transparent plastic (n 5 1.61). Light whose wavelength is 589 nm in vacuum is incident nearly perpendicularly on the coated glass and refl ects into your eyes. The layer of plastic looks dark. Find the two smallest possible nonzero values for the thickness of the layer.
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