Conceptual Physics (12th Edition)

Published by Addison-Wesley
ISBN 10: 0321909100
ISBN 13: 978-0-32190-910-7

Chapter 28 - Think and Explain: 78

Answer

A converging lens that works for sound waves could be made from a bag of gas in which sound travels at a slower speed.

Work Step by Step

This would look just like the converging lens for light shown in Figure 28.18, and work on the same principle of refraction.
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