Conceptual Physics (12th Edition)

Published by Addison-Wesley
ISBN 10: 0321909100
ISBN 13: 978-0-32190-910-7

Chapter 26 - Think and Explain: 45

Answer

Ultraviolet light, in both cases.

Work Step by Step

UV light has a higher frequency and a shorter wavelength than infrared light. Smaller frequencies correspond to longer wavelengths. This is shown on page 489-490, and in Figure 26.3.
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