Fundamentals of Physics Extended (10th Edition)

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

Chapter 35 - Interference - Questions - Page 1072: 3a

Answer

The path length difference is $~~2d$

Work Step by Step

In the first arrangement, the path length from the point crossing the bottom horizontal line to the point crossing the top horizontal line is $5d$ In the second arrangement, the path length from the point crossing the bottom horizontal line to the point crossing the top horizontal line is $3d$ The path length difference is $~~2d$
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