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

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Question: What is the minimum energy required to remove an electron from a metal surface with a work function of 2 eV? (2021)

Options:

  1. 1 eV
  2. 2 eV
  3. 3 eV
  4. 4 eV

Correct Answer: 2 eV

Exam Year: 2021

Solution: 

The minimum energy required is equal to the work function, which is 2 eV.

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 eV? (2021)
  1. 1 eV
  2. 2 eV
  3. 3 eV
  4. 4 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 eV? (2021)
  • Step 1: Understand what a work function is. It is the minimum energy needed to remove an electron from a metal surface.
  • Step 2: Identify the work function given in the question, which is 2 eV.
  • Step 3: Realize that the minimum energy required to remove an electron is equal to the work function.
  • Step 4: Conclude that the minimum energy required to remove an electron from the metal surface is 2 eV.
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