College Physics (7th Edition)

Published by Pearson
ISBN 10: 0-32160-183-1
ISBN 13: 978-0-32160-183-4

Chapter 24 - Physical Optics: The Wave of Nature of Light - Learning Path Questions and Exercises - Multiple Choice Questions - Page 839: 3

Answer

(a) Red

Work Step by Step

In young's double spit experiment using monochromatic light the interference maxima spacing is given by $yn=nLV/d$ The wavelength of red is more than blue so its maxima will be at farthest. so, the answer is (a) red.
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