College Physics (7th Edition)

Published by Pearson
ISBN 10: 0-32160-183-1
ISBN 13: 978-0-32160-183-4

Chapter 22 - Reflection and Refraction of Light - Learning Path Questions and Exercises - Exercises - Page 774: 17

Answer

a). $(2)$ water to air, b). $48.8^{\circ}$.

Work Step by Step

a). For total internal reflection to occur, light must go from more optically dense medium to a less optically dense one, it must go from high n-medium into a low n-medium, which is the case for water to air. So, the answer is (2) b). From Snell's law, $sini_{c}=\frac{n_{a}\times sin90^{\circ}}{n_{w}}=\frac{1}{1.33}$ So, $i_{c}=48.8^{\circ}$
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