Answer
The longest wavelength is $389 \mathrm{pm} / 3=130 \mathrm{pm}$.
Work Step by Step
The longest wavelength is $389 \mathrm{pm} / 3=130 \mathrm{pm}$.
Fundamentals of Physics Extended (10th Edition)
by Halliday, David; Resnick, Robert; Walker, Jearl
Published by
Wiley
ISBN 10:
1-11823-072-8
ISBN 13:
978-1-11823-072-5
Chapter 36 - Diffraction - Problems - Page 1113: 72a
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