Find the minimum thickness of the film

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Reference no: EM13271731

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

Reference no: EM13271731

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