Solved: Monochromatic light of variable wavelength is
Chapter 27, Problem 75GP(choose chapter or problem)
Problem 75GP
Monochromatic light of variable wavelength is incident normally on a thin sheet of plastic film in air. The reflected light is a minimum only for λ = 512 nm and λ = 640 nm in the visible spectrum. What is the thickness of the film (n = 1.58)? [Hint: assume successive values of m.]
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