Fundamentals of Physics Extended (10th Edition)

Published by Wiley
ISBN 10: 1-11823-072-8
ISBN 13: 978-1-11823-072-5

Chapter 33 - Electromagnetic Waves - Problems - Page 1001: 3a

Answer

$\lambda \approx 515nm$

Work Step by Step

Since the maximum relative intensity is about 100, half the maximum intensity would have a relative intensity of 50. The lesser wavelength that has a relative intensity of 50 is estimated to be 515nm.
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