Physics Technology Update (4th Edition)

Published by Pearson
ISBN 10: 0-32190-308-0
ISBN 13: 978-0-32190-308-2

Chapter 28 - Physical Optics: Interference and Diffraction - Conceptual Questions - Page 1003: 5

Answer

The pattern will be reversed.

Work Step by Step

In the given scenario the interference pattern will be reversed. If the phase of light from one slit is changed by $180^\circ$ then destructive interference occurs at the center of the pattern. Thus, the bright fringes will take the location of dark fringes and vice versa.
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