Answer
$w = 20~mm$
Work Step by Step
We can find width of the central maximum:
$w = \frac{2~\lambda~L}{d}$
$w = \frac{(2)~(2.0~m)}{200}$
$w = 0.020~m$
$w = 20~mm$
Physics for Scientists and Engineers: A Strategic Approach with Modern Physics (3rd Edition)
by Knight, Randall D.
Published by
Pearson
ISBN 10:
0321740904
ISBN 13:
978-0-32174-090-8
Chapter 22 - Wave Optics - Exercises and Problems - Page 649: 16
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