Physics for Scientists and Engineers: A Strategic Approach with Modern Physics (4th Edition)

Published by Pearson
ISBN 10: 0133942651
ISBN 13: 978-0-13394-265-1

Chapter 33 - Wave Optics - Exercises and Problems - Page 956: 33

Answer

(a) This is the pattern produced by a double slit. (b) $d = 1.55\times 10^{-4}~m$

Work Step by Step

(a) The pattern shows the bright bands to be of equal width and decreasing gradually in intensity from a central maximum. This is the pattern produced by a double slit. (b) We can find the spacing between the slits: $y = \frac{\lambda~L}{d}$ $d = \frac{\lambda~L}{y}$ $d = \frac{(620\times 10^{-9}~m)(2.5~m)}{1.0\times 10^{-2}~m}$ $d = 1.55\times 10^{-4}~m$
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