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KCET2026PhysicsDual Nature of Matter

Work function of the metal is

Options

  1. AMaximum possible energy acquired by an electron
  2. BEqual for all metals
  3. CMinimum energy required by an electron to just eject from metal surface
  4. DMaximum energy which is given to electron to move out of metal surface

Correct answer

C. Minimum energy required by an electron to just eject from metal surface

Step-by-step solution

The work function of a metal is defined as the minimum amount of energy required by an electron to just escape from the metal surface. It is a characteristic property of the metal and varies from one metal to another. Answer: Minimum energy required by an electron to just eject from metal surface

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