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 - Exercises - Page 1278: 38.45


Choice B.

Work Step by Step

If we were only to increase the number of incoming electrons, without increasing their energy, we would get more photons at every energy, but the maximum energy would stay the same. If we raise the accelerating potential, the incoming electrons are each more energetic, and the maximum energy of the emitted photons will rise.
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