Physics: Principles with Applications (7th Edition)

Published by Pearson
ISBN 10: 0-32162-592-7
ISBN 13: 978-0-32162-592-2

Chapter 22 - Electromagnetic Waves - Questions: 10

Answer

AM waves have a longer wavelength that allows t hem to bend around obstacles.

Work Step by Step

As you can verify by looking on your radio dial, AM radio waves have a much smaller frequency and a much longer wavelength than FM radio waves. The amount by which waves bend (“diffract”) around an obstacle depends on size of the obstacle compared to the wavelength. Because AM radio wavelengths are large compared to low hills and buildings, AM radio waves readily bend around such obstacles. The same is not true of FM radio waves.
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.