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  4. In photoelectric effect, the electrons are ejected from metals if the incident light has a certain minimum

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Q. In photoelectric effect, the electrons are ejected from metals if the incident light has a certain minimum

Jharkhand CECEJharkhand CECE 2007

Solution:

In photoelectric effect for a given photosensitive material, there exists a certain minimum cut-off frequency, called the threshold frequency, below which no emission of photoelectrons takes place no matter how intense the light is.