Photons of energy 6 eV are incident on a metal surface whose work function is 4 eV. The minimum kinetic energy of the emitted photo-electrons will be
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A
We can determine the maximum kinetic energy of a photoelectron using Einstein's equation of the photoelectric effect. But, all photoelectrons are not ejected with maximum kinetic energy.
Kinetic energy of the emitted photoelectrons varies from zero to a maximum value.
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