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

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Question: What is the minimum energy required to remove an electron from the surface of a metal with a work function of 2.5 eV? (2023)

Options:

  1. 1.5 eV
  2. 2.5 eV
  3. 3.5 eV
  4. 4.5 eV

Correct Answer: 2.5 eV

Exam Year: 2023

Solution: 

The minimum energy required to remove an electron is equal to the work function of the metal, which is 2.5 eV.

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

Practice Questions

Q1
What is the minimum energy required to remove an electron from the surface of a metal with a work function of 2.5 eV? (2023)
  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 the surface of a metal with a work function of 2.5 eV? (2023)
  • Step 1: Understand what the work function is. The work function is the minimum energy needed to remove an electron from a metal.
  • Step 2: Identify the work function value given in the question. In this case, it 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 is 2.5 eV.
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