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In a photoelectric effect experiment, increasing the intensity of light increase

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Question: In a photoelectric effect experiment, increasing the intensity of light increases the number of emitted electrons. What does this imply?

Options:

  1. Light is a wave
  2. Light is a particle
  3. Energy of each photon increases
  4. Number of photons increases

Correct Answer: Number of photons increases

Solution: 

Increasing the intensity of light increases the number of photons hitting the surface, which in turn increases the number of emitted electrons.

In a photoelectric effect experiment, increasing the intensity of light increase

Practice Questions

Q1
In a photoelectric effect experiment, increasing the intensity of light increases the number of emitted electrons. What does this imply?
  1. Light is a wave
  2. Light is a particle
  3. Energy of each photon increases
  4. Number of photons increases

Questions & Step-by-Step Solutions

In a photoelectric effect experiment, increasing the intensity of light increases the number of emitted electrons. What does this imply?
Correct Answer: Increasing the intensity of light increases the number of emitted electrons.
  • Step 1: Understand that light is made up of tiny particles called photons.
  • Step 2: Realize that when light shines on a surface, these photons can hit the surface.
  • Step 3: Know that when a photon hits an electron in the surface, it can give the electron enough energy to escape.
  • Step 4: Increasing the intensity of light means more photons are hitting the surface at the same time.
  • Step 5: More photons hitting the surface means more chances for electrons to be hit and emitted.
  • Step 6: Therefore, increasing the intensity of light leads to an increase in the number of emitted electrons.
  • Photoelectric Effect – The phenomenon where electrons are emitted from a material when it is exposed to light of sufficient frequency.
  • Intensity and Photon Count – Intensity of light is directly related to the number of photons; higher intensity means more photons striking the surface.
  • Electron Emission – The number of emitted electrons is proportional to the number of photons, assuming each photon can cause the emission of one electron.
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