https/ledugen wileyplus.com/edugen/student/mainfr.uni Assig Chapter 35, A thin f
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https/ledugen wileyplus.com/edugen/student/mainfr.uni Assig Chapter 35, A thin film, with a thickness of 275.3 nm and with air on both sides, is illuminated with a beam of white light. The beam is perpendicular to the film and consists of the full range of wavelengths for the visible spectrum In the light reflected by the film, light with a wavelength of 619.9 undergoes fully constructive interference. At what wavelength does the reflected light undergo fully destructive interference? (Hint: You must make a reasonable assumption about the index of refraction.) Units click if you would like to show work for this question: open show work Question Attempts: o of 5 used SAwr FOR LATER SaunHITANswER copyrighi t 2000-2017 John Wiley Sons inc. or related companie All rights reserved All Rights Reserved.Explanation / Answer
Equation for constructive is
(m + 1/2) * lambda / n = 2 d
n = 1.5 / [2 * 275.3 / 619.9]
n = 1.69
For destructive interference
m lambda / n = 2 d
lambda = 2 * 275.3 * 1.69 / 2
lambda = 465 nm
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