Conceptual Physics (12th Edition)

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

Part 6 - Multiple-Choice Practice Exam - Page 600: 20

Answer

Light undergoes interference and can sometimes cancel completely.

Work Step by Step

This is discussed on page 549. The complete cancellation is shown in Figure 29.12b. It can superpose to equal the sum of the amplitudes, but can't be more than the sum.
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