Question: A thin layer of oil n 1 50 floats on

A thin layer of oil (n = 1.50) floats on water. Destructive interference is observed for reflected light of wavelengths 480 nm and 600 nm, each at a different location.
(a) If the order number is the same for both wave-lengths, which wavelength is at a greater thickness: (1) 480 nm, or (2) 600 nm? Explain.
(b) Write the general condition of destructive intereference for reflected light.
(c) Find the two minimum thicknesses of the oil film, assuming normal incidence.

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  • CreatedAugust 29, 2015
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