Conceptual Physics (12th Edition)

Published by Addison-Wesley
ISBN 10: 0321909100
ISBN 13: 978-0-32190-910-7

Chapter 28 - Think and Discuss - Page 542-543: 101


It will see both.

Work Step by Step

This is illustrated in Figure 28.38. The critical angle for water is $48^{\circ}$. When a fish looks upward at $45^{\circ}$, which is less than the critical angle, it sees the sky and some reflection from the pond's bottom. If it were to look at an angle greater than $48^{\circ}$ from the normal, it would only see the pond's bottom due to total internal reflection.
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