A plastic film (index of refraction n 1.6) held in air exhibits reflection minima at wavelengths 520 nm and 650 nm when white light at vertical incidence is shined on the plastic film. What is the thickness of the film?
A plastic film (index of refraction n 1.6) held in air exhibits reflection minima at wavelengths 520 nm and 650 nm when white light at vertical incidence is shined on the plastic film. What is the thickness of the film?
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Transcribed Image Text:A plastic film (index of refraction n=1.6) held in air exhibits reflection minima at
wavelengths 520 nm and 650 nm when white light at vertical incidence is shined
on the plastic film. What is the thickness of the film?
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