Monochromatic light of variable wavelength is incident normally on a thin sheet of plastic film in air. The reflected light is a maximum only for A = 491.4 nm and A = 688.0 nm in the visible spectrum. What is the thickness of the film (n = 1.58)? [Hint: Assume successive values of m.]
Monochromatic light of variable wavelength is incident normally on a thin sheet of plastic film in air. The reflected light is a maximum only for A = 491.4 nm and A = 688.0 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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![Monochromatic light of variable wavelength is incident
normally on a thin sheet of plastic film in air. The reflected
light is a maximum only for A = 491.4 nm and A = 688.0 nm
in the visible spectrum. What is the thickness of the film
(n = 1.58)? [Hint: Assume successive values of m.]](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F41899015-a897-4662-a887-ed06d298b377%2F6ac70551-3255-4a49-8932-e41bf8173688%2Fzecod8_processed.png&w=3840&q=75)
Transcribed Image Text:Monochromatic light of variable wavelength is incident
normally on a thin sheet of plastic film in air. The reflected
light is a maximum only for A = 491.4 nm and A = 688.0 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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