College Physics (4th Edition)

Published by McGraw-Hill Education
ISBN 10: 0073512141
ISBN 13: 978-0-07351-214-3

Chapter 22 - Problems - Page 866: 67


The maximum length of the antenna is $3.0~cm$

Work Step by Step

We can find the wavelength of the microwaves: $\lambda = \frac{c}{f}$ $\lambda = \frac{3.0\times 10^8~m/s}{5.0\times 10^9~Hz}$ $\lambda = 0.060~m = 6.0~cm$ Since the antenna is not to exceed half of a wavelength, the maximum length of the antenna is $3.0~cm$
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