A soap bubble is 100 nm thick and illuminated by whitelight incident perpendicular to its surface. What wavelengthand color of visible light is most constructively reflected,assuming the same index of refraction as water?

A soap bubble is 100 nm thick and illuminated by whitelight incident perpendicular to its surface. What wavelengthand color of visible light is most constructively reflected,assuming the same index of refraction as water?

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter38: Refraction And Images Formed By Refraction

Section: Chapter Questions

Problem 30PQ

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Concept explainers

Interference of Light

The word "constructive" signifies addition in interference. Constructive interference occurs when the path of the waves that start from the slit differs by 1 entire wavelength or in the intervals of the same. Hence, the waves that are presented on the screen are in phase (crest to crest/trough to trough). The waves interfering constructively forms bright fringes on the screen.

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A soap bubble is 100 nm thick and illuminated by white
light incident perpendicular to its surface. What wavelength
and color of visible light is most constructively reflected,
assuming the same index of refraction as water?

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