Reflected light from a thin film of oil gives constructive interference for light with a wavelength inside

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Reflected light from a thin film of oil gives constructive interference for light with a wavelength inside the film of \(\lambda_{\text {film }}\). By how much would the film thickness need to be increased to give destructive interference?

A. \(2 \lambda_{\text {film }}\)

B. \(\lambda_{\text {film }}\)

C. \(\lambda_{\text {film }} / 2\)

D. \(\lambda_{\text {film }} / 4\)

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College Physics A Strategic Approach

ISBN: 9780321907240

3rd Edition

Authors: Randall D. Knight, Brian Jones, Stuart Field

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