In a photoemission experiment, the maximum kinetic energies of photoele and R are Ep, E and ER, respectively, and they are related by Ep = 2Eo= the same source of monochromatic light is used for metals P and Q wh monochromatic light is used for the metal R. The work functions for metal 4.5 eV and 5.5 eV, respectively. The energy of the incident photon used for

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19.
In a photoemission experiment, the maximum kinetic energies of photoelectrons from metals P, Q
and R are Ep, E and ER, respectively, and they are related by Ep = 2Eo = 2ER. In this experiment,
the same source of monochromatic light is used for metals P and Q while a different source of
monochromatic light is used for the metal R. The work functions for metals P, Q and R are 4.0 eV,
4.5 eV and 5.5 eV, respectively. The energy of the incident photon used for metal R, in eV, is
Transcribed Image Text:19. In a photoemission experiment, the maximum kinetic energies of photoelectrons from metals P, Q and R are Ep, E and ER, respectively, and they are related by Ep = 2Eo = 2ER. In this experiment, the same source of monochromatic light is used for metals P and Q while a different source of monochromatic light is used for the metal R. The work functions for metals P, Q and R are 4.0 eV, 4.5 eV and 5.5 eV, respectively. The energy of the incident photon used for metal R, in eV, is
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