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(III) A uniform thin film of alcohol (n = 1.36) lies on a flat glass plate (n = 1.56). When monochromatic light, whose wavelength can be changed, is incident normally, the reflected light is a minimum for A = 525 nm and a maximum for A = 655 nm. What is the minimum thickness of the film?

(III) A uniform thin film of alcohol (n = 1.36) lies on a flat glass plate (n = 1.56). When monochromatic light, whose wavelength can be changed, is incident normally, the reflected light is a minimum for A = 525 nm and a maximum for A = 655 nm. What is the minimum thickness of the film?

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(III) A uniform thin film of alcohol (n = 1.36) lies on a flat glass plate (n = 1.56). When monochromatic light, whose wavelength can be changed, is incident normally, the reflected light is a minimum for A = 525 nm and a maximum for A = 655 nm. What is the minimum thickness of the film?
Transcribed Image Text:(III) A uniform thin film of alcohol (n = 1.36) lies on a flat glass plate (n = 1.56). When monochromatic light, whose wavelength can be changed, is incident normally, the reflected light is a minimum for A = 525 nm and a maximum for A = 655 nm. What is the minimum thickness of the film?
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