A lens (n = 1.52) is coated with a magnesium fluoride film (n = 1.38). (a) If
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A lens (n = 1.52) is coated with a magnesium fluoride film (n = 1.38).
(a) If the coating is to cause destructive interference in reflected light for λ = 560 nm (the peak of the solar spectrum), what should its minimum thickness be?
(b) At what two wavelengths closest to 560 nm does the coating cause constructive interference in reflected light?
(c) Is any visible light reflected? Explain.
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a If the coating is to cause destructive interference then the wavelengths in air must satisfy 560 ...View the full answer
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