Evaluate what is the minimum thickness of the film

Reference no: EM13560818

A thin film of alcohol (n=1.36) lies on a flat glass plate(n=1.51). When monochromatic light, whose wavelength can bechanged, is incident normally, the reflected light is a minimum forwavelength 512nm and maximum for 640 nm. What is the minimum thickness of the film?

Reference no: EM13560818

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