Physics: Principles with Applications
6th Edition
ISBN: 9780130606204
Author: Douglas C. Giancoli
Publisher: Prentice Hall
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Question
Chapter 27, Problem 9Q
To determine
If light of the same intensity but of wavelength 400 nm strikes the surface, are more electrons emitted? Does the energy of the emitted electrons change?
Expert Solution & Answer
Answer to Problem 9Q
Solution:
The number of electrons emitted does not depend on the
Explanation of Solution
The emission of electrons or other free carriers when light shines on a material. The number of electrons emitted does not depend on the frequency of the light, but on the intensity of the light. Therefore, the 400nm waves cause the same amount of electrons to be emitted. However, because the frequency of the 400nm light is greater, the maximum kinetic energy of the ejected electrons is higher.
Chapter 27 Solutions
Physics: Principles with Applications
Ch. 27 - Prob. 1QCh. 27 - Prob. 2QCh. 27 - Prob. 3QCh. 27 - Prob. 4QCh. 27 - Prob. 5QCh. 27 - Prob. 6QCh. 27 - Prob. 7QCh. 27 - Prob. 8QCh. 27 - Prob. 9QCh. 27 - Prob. 10Q
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