Conceptual Physics (12th Edition)

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

Part 6 - Multiple-Choice Practice Exam: 27

Answer

The red glow in the neon tube of an advertising sign is a result of de-excitation.

Work Step by Step

The light in the emission spectrum is emitted when excited electrons drop down to lower energy levels. This is discussed on pages 566-567.
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