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In the photoelectric effect, which of the following factors does NOT affect the

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Question: In the photoelectric effect, which of the following factors does NOT affect the photoelectric current?

Options:

  1. Intensity of light
  2. Frequency of light
  3. Surface area of the metal
  4. Type of metal

Correct Answer: Frequency of light

Solution: 

The frequency of light must be above a certain threshold to emit electrons, but once that is achieved, the photoelectric current depends on the intensity, not the frequency.

In the photoelectric effect, which of the following factors does NOT affect the

Practice Questions

Q1
In the photoelectric effect, which of the following factors does NOT affect the photoelectric current?
  1. Intensity of light
  2. Frequency of light
  3. Surface area of the metal
  4. Type of metal

Questions & Step-by-Step Solutions

In the photoelectric effect, which of the following factors does NOT affect the photoelectric current?
  • Step 1: Understand the photoelectric effect. This is when light hits a material and causes it to emit electrons.
  • Step 2: Know that there are two important factors in the photoelectric effect: frequency of light and intensity of light.
  • Step 3: Realize that the frequency of light must be above a certain level (threshold frequency) to release electrons.
  • Step 4: Once the frequency is above this threshold, the photoelectric current (the flow of emitted electrons) does not depend on frequency anymore.
  • Step 5: Understand that the photoelectric current depends on the intensity of the light, which is related to how many photons are hitting the material.
  • Step 6: Conclude that the factor that does NOT affect the photoelectric current, once the threshold frequency is met, is the frequency of the light.
  • Photoelectric Effect – The phenomenon where electrons are emitted from a material when it is exposed to light of sufficient frequency.
  • Threshold Frequency – The minimum frequency of light required to emit electrons from a material.
  • Photoelectric Current – The current produced by the flow of emitted electrons, which depends on the intensity of light once the threshold frequency is exceeded.
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