Answered: If a soap bubble is 120 nm thick, what…

If a soap bubble is 120 nm thick, what wavelength ismost strongly reflected at the center of the outer surfacewhen illuminated normally by white light? Assume that n=1.32

University Physics Volume 3

17th Edition

ISBN:9781938168185

Author:William Moebs, Jeff Sanny

Publisher:William Moebs, Jeff Sanny

Chapter3: Interference

Section: Chapter Questions

Problem 39P: A soap bubble is 100 nm thick and illuminated by white light incident perpendicular to its surface....

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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.

Question

If a soap bubble is 120 nm thick, what wavelength is
most strongly reflected at the center of the outer surface
when illuminated normally by white light? Assume that n=1.32

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