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In the photoelectric effect, what does the work function represent?

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Question: In the photoelectric effect, what does the work function represent?

Options:

  1. The energy of the incident photons
  2. The maximum kinetic energy of emitted electrons
  3. The minimum energy required to remove an electron from the metal
  4. The frequency of the incident light

Correct Answer: The minimum energy required to remove an electron from the metal

Solution: 

The work function is the minimum energy required to remove an electron from the surface of the metal.

In the photoelectric effect, what does the work function represent?

Practice Questions

Q1
In the photoelectric effect, what does the work function represent?
  1. The energy of the incident photons
  2. The maximum kinetic energy of emitted electrons
  3. The minimum energy required to remove an electron from the metal
  4. The frequency of the incident light

Questions & Step-by-Step Solutions

In the photoelectric effect, what does the work function represent?
Correct Answer: The work function is the minimum energy required to remove an electron from the surface of the metal.
  • Step 1: Understand that the photoelectric effect involves light hitting a metal surface.
  • Step 2: Know that when light hits the metal, it can cause electrons to be released.
  • Step 3: Realize that not just any amount of energy can remove an electron; there is a minimum amount needed.
  • Step 4: This minimum energy is called the 'work function'.
  • Step 5: The work function is specific to each type of metal.
  • Work Function – The minimum energy needed to remove an electron from the surface of a metal.
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