University Physics with Modern Physics (14th Edition)

Published by Pearson
ISBN 10: 0321973615
ISBN 13: 978-0-32197-361-0

Chapter 33 - The Nature and Propagation of Light - Problems - Exercises - Page 1105: 33.13

Answer

$71.8^{\circ} $.

Work Step by Step

Apply Snell’s law to the refraction at the interface. $$n_a sin\theta_a= n_b sin\theta_b$$ $$1.70 sin62.0^{\circ}=1.58 sin\theta_b$$ $$ \theta_b=71.8^{\circ} $$ The ray refracts into a material of smaller n. It speeds up and bends away from the normal.
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