University Physics with Modern Physics (14th Edition)

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

Chapter 40 - Quantum Mechanics I: Wave Functions - Problems - Exercises - Page 1359: 40.70

Answer

Choice A.

Work Step by Step

We apply the Heisenberg uncertainty principle for energy and time. $$\Delta E \Delta t \geq \frac{\hbar}{2}$$ Because the uncertainty in time is relatively long, the uncertainty in energy is small. The energies of emitted photons are well-defined. This analysis supports choice A.
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.