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The work function of cesium is 2.14 eV. Calculate the kinetic energy and the speed of the electrons ejected by light of wavelength 700. nm

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The work function of cesium is 2.14 eV. Calculate the kinetic energy and the speed of the electrons ejected by light of wavelength 700. nm 550. nm 400. nm Can all of them kick off photoelectrons from the metal surface

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