Engineers are testing a new thin-film coating whose index of refraction is less than that of glass.
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Engineers are testing a new thin-film coating whose index of refraction is less than that of glass. They deposit a 560-nm thick layer on glass, then shine lasers on it. A red laser with a wavelength of 640 nm has no reflection at all, but a violet laser with a wavelength of 400 nm has a maximum reflection. How the coating behaves at other wavelengths is unknown. What is the coating’s index of refraction?
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Related Book For 
Physics for Scientists and Engineers A Strategic Approach with Modern Physics
ISBN: 978-0133942651
4th edition
Authors: Randall D. Knight
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