Concept explainers
Interpretation:
Einstein
Concept introduction:
The photoelectric effect occurs when light of a certain frequency strikes a metal surface and ejects electrons. Light has a dual nature. A beam of light has wavelike and particle likes properties.
Answer to Problem 40A
Einstein explains that light has dual nature wave and particle nature.
Explanation of Solution
Einstein explains that light has dual nature, mass less particle that term as photon nature or energy nature. Photon carries quantum of energy. Einstein also states a photon’s energy must have a threshold value to allow a photoelectron to be ejected from the metal surface.
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