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What is the minimum energy required to remove an electron from a metal surface w

Practice Questions

Q1
What is the minimum energy required to remove an electron from a metal surface with a work function of 2.5 eV? (2022)
  1. 1.5 eV
  2. 2.5 eV
  3. 3.5 eV
  4. 4.5 eV

Questions & Step-by-Step Solutions

What is the minimum energy required to remove an electron from a metal surface with a work function of 2.5 eV? (2022)
  • Step 1: Understand the term 'work function'. It is the minimum energy needed to remove an electron from a metal surface.
  • Step 2: Identify the work function value given in the question, which is 2.5 eV.
  • Step 3: Realize that the minimum energy required to remove an electron is equal to the work function value.
  • Step 4: Conclude that the minimum energy required to remove an electron from the metal surface is 2.5 eV.
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