Answered: What is total internal reflection. Give…

University Physics Volume 3

17th Edition

ISBN:9781938168185

Author:William Moebs, Jeff Sanny

Publisher:William Moebs, Jeff Sanny

Chapter1: The Nature Of Light

Section: Chapter Questions

Problem 13CQ: How can you use total internal reflection to estimate the index of refraction of a medium?

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What is total internal reflection. Give example.

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When a ray of light travels from denser medium to rarer medium, for a particular angle of incidence, the ray completely reflects back into the denser medium. This phenomena is known as total internal reflection. The angle of incidence above the "Total internal reflection" occurs is known as critical angle.

That means, for any angle of incidence more than the critical angle, all of the rays will reflect completely back into the medium. Hence, total internal reflection occurs at angles of incidence above the critical angle.

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