Physics Technology Update (4th Edition)

Published by Pearson
ISBN 10: 0-32190-308-0
ISBN 13: 978-0-32190-308-2

Chapter 31 - Atomic Physics - Problems and Conceptual Exercises - Page 1114: 60

Answer

Please see the work below.

Work Step by Step

We know that the frequency of the radiation that excites a fluorescent material is greater than the frequency of the radiation the material emits. We also know that the frequency is inversely proportional to the wavelength. Thus, the wavelength of the radiation that excites a fluorescent material is less than the wavelength of the radiation the material emits.
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