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      Question

      A photon of energy 3 eV collides with a metal having a

      work function of 2 eV. Kinetic energy of the emitted electron is:
      A 1 eV Correct Answer Incorrect Answer
      B 5 eV Correct Answer Incorrect Answer
      C 2 eV Correct Answer Incorrect Answer
      D 3 eV Correct Answer Incorrect Answer

      Solution

      KE= hΞ½ βˆ’ Ο• = 3-2 = 1 eV

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