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A thin layer of a material with an index of refraction 1.50 is placed on top...

  1. A thin layer of a material with an index of refraction 1.50 is placed on top of a translucent slab with an index of refraction of 1.80. Air surrounds both. When a source of white light is shown on the surface, the top layer greatly reduces the intensity of reflected light having a 630-nm wavelength. (a) Find the top layer’s minimum thickness. (b) Does it reduce other reflected wavelengths in the visible spectrum? Which ones? (c) If 25.0nm were shaved off of the top layer, which reflected wavelengths in the visible spectrum are suppressed?

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