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What happens to a light wave when it is reflected off the surface of a material with a LOWER index of refraction?

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter22: Reflection And Refraction Of Light

Section: Chapter Questions

Problem 25P

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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

What happens to a light wave when it is reflected off the surface of a material with a LOWER index of refraction?

A) it reflects with its phase shifted by (pi)

B) there is no reflection

C) it reflects with its phase shifted by (pi/2)

D) it reflects with its phase unshifted

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