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The kinetic energy of the photoelectrons ejected by a metal surface increased from 0.6 eV to 0.9 eV when the energy of the incident photons was increased by 20 % . The work function of the metal is

Options

  1. A0.66 eV
  2. B0.72 eV
  3. C0.90 eV
  4. D0.30 eV

Correct answer

C. 0.90 eV

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