University Physics with Modern Physics (14th Edition)

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

Chapter 38 - Photons: Light Waves Behaving as Particles - Problems - Discussion Questions - Page 1275: Q38.13

Answer

See explanation.

Work Step by Step

The new frequency f' is lower than the original frequency f, because the photon has transferred some of its energy to the electron that it scattered from. The answer does depend on the angle, because the photon loses differing amounts of energy, depending on if the collision is almost head on or just a glancing collision. Equation 38.7 can be used to relate the 2 wavelengths, and thus, the 2 frequencies.
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