The kinetic energy of most energetic electrons emitted from a metallic surface is double
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Electrons are ejected from the surface of a metal whenever light of sufficient energy strikes on its surface. This electrons are called photoelectrons and the phenomenon is called the photoelectric effect. The maximum kinetic energy of is the kinetic energy of the most energetic electron ejected from the metal surface...
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The kinetic energy of most energetic electrons emitted from a metallic surface is doubled when the wavelength λ of the incident radiation is changed from 400 nm to 310 nm.
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