Concept explainers
The reason for which the electrons left in the metals in an ordinary room without undergoing
Answer to Problem 1CQ
The threshold wavelength for photoelectric effect to take place is generally shorter than the
Explanation of Solution
In photoelectric effect, electrons are ejected from certain metallic surfaces as the
In an ordinary room atmosphere, the ambient light is in the visible range, which have wavelength higher than the threshold wavelength. Thus, the energy of the incident photons of visible spectrum cannot knock out electrons due to the lack of sufficient energy. Moreover, the oxide layers and other coatings on the surface of the metal often hinder the interaction of the incident light and the electrons in the metal surface. These are the reasons for which the electrons left in the metals in an ordinary room without undergoing photoelectric effect
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Chapter 28 Solutions
College Physics (10th Edition)
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