Physics Technology Update (4th Edition)

Published by Pearson
ISBN 10: 0-32190-308-0
ISBN 13: 978-0-32190-308-2

Chapter 26 - Geometrical Optics - Problems and Conceptual Exercises - Page 941: 44

Answer

a) increase b) I

Work Step by Step

(a) We know that as it leaves the glass, the speed of light increases because the ray is now propagating through a medium having a smaller index of refraction. (b) We know that the best explanation is option (I) -- that is, its speed increases because the ray is now propagating in a medium with a smaller index of refraction.
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