College Physics (7th Edition)

Published by Pearson
ISBN 10: 0-32160-183-1
ISBN 13: 978-0-32160-183-4

Chapter 14 - Sound - Learning Path Questions and Exercises - Multiple Choice Questions - Page 522: 10


(c) 1000

Work Step by Step

$L=10log\frac{I}{I_{0}}$ Also, $L=30dB$ Therefore, $log\frac{I}{I_{0}}=3$ or, $I=I_{0}\times 1000$
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