Fundamentals of Physics Extended (10th Edition)

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

Chapter 17 - Waves-II - Questions - Page 505: 2c

Answer

Situation (a): fully constructive interference Situation (b): fully destructive interference

Work Step by Step

Situation (a): The phase difference is $~~2~wavelengths$ Fully constructive interference occurs when the phase difference is a multiple of the wavelength. Situation (b): The phase difference is $~~1.5~wavelengths$ Fully destructive interference occurs when the phase difference has the form $0.5, 1.5, 2.5,...$ times the wavelength.
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