Fundamentals of Physics Extended (10th Edition)

Published by Wiley
ISBN 10: 1-11823-072-8
ISBN 13: 978-1-11823-072-5

Chapter 16 - Waves-I - Questions - Page 471: 5

Answer

The interference is intermediate, but it is closer to fully destructive.

Work Step by Step

If the phase-shift was 5.5 wavelengths, then the interference would be fully destructive. Since the phase-shift is slightly less than 5.5 wavelengths, the interference is intermediate, but it is closer to fully destructive.
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