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Which of the following statements is true about the photoelectric effect?

Practice Questions

Q1
Which of the following statements is true about the photoelectric effect?
  1. It requires a minimum frequency of light
  2. It occurs with any frequency of light
  3. It is independent of light intensity
  4. It can occur in a vacuum only

Questions & Step-by-Step Solutions

Which of the following statements is true about the photoelectric effect?
  • Step 1: Understand that the photoelectric effect is a phenomenon where light can cause electrons to be emitted from a material.
  • Step 2: Learn that not all light can cause this effect; only light with a certain minimum frequency can do so.
  • Step 3: This minimum frequency is called the threshold frequency.
  • Step 4: If the frequency of the light is below this threshold, no electrons will be emitted, regardless of the light's intensity.
  • Step 5: If the frequency is above the threshold, electrons will be emitted, and their energy will depend on the frequency of the light.
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