![]() It is constant for a given metal, but can be different for different metals. the ejection of photoelectrons from a metal surface is known as the threshold frequency for the metal. It is the minimum frequency of the incident light or radiation that produces a photoelectric effect, i.e. Photons are virtual particles and their energy is directly proportional to the frequency and inversely proportional to the wavelength.When matter interacts with radiation, the radiation behaves as if it is made up of small particles called photons. ![]()
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