Physics: Principles with Applications (7th Edition)

Published by Pearson
ISBN 10: 0-32162-592-7
ISBN 13: 978-0-32162-592-2

Chapter 23 - Light: Geometric Optics - Problems - Page 674: 30

Answer

$38.6^{\circ}$

Work Step by Step

Find the angle of incidence using Snell’s law. Here “1” designates water, and “2” designates air. $$n_1sin\theta_1= n_2sin\theta_2$$ $$\theta_1=sin^{-1}(\frac{n_2}{n_1}sin\theta_2) $$ $$=sin^{-1}(\frac{1.00}{1.33}sin56.0^{\circ}) =38.6^{\circ}$$
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