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In a photoelectric experiment, if the stopping potential is increased, what happ

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Question: In a photoelectric experiment, if the stopping potential is increased, what happens to the maximum kinetic energy of the emitted electrons?

Options:

  1. It increases
  2. It decreases
  3. It remains the same
  4. It becomes zero

Correct Answer: It increases

Solution: 

Increasing the stopping potential increases the maximum kinetic energy of the emitted electrons, as the stopping potential is directly related to the kinetic energy of the electrons.

In a photoelectric experiment, if the stopping potential is increased, what happ

Practice Questions

Q1
In a photoelectric experiment, if the stopping potential is increased, what happens to the maximum kinetic energy of the emitted electrons?
  1. It increases
  2. It decreases
  3. It remains the same
  4. It becomes zero

Questions & Step-by-Step Solutions

In a photoelectric experiment, if the stopping potential is increased, what happens to the maximum kinetic energy of the emitted electrons?
Correct Answer: Maximum kinetic energy increases.
  • Step 1: Understand what stopping potential means. It is the voltage needed to stop the emitted electrons from reaching the anode.
  • Step 2: Know that the maximum kinetic energy of emitted electrons is related to the energy they gain from the incoming light.
  • Step 3: Realize that when the stopping potential is increased, it means we are applying a higher voltage to stop the electrons.
  • Step 4: Understand that a higher stopping potential means that the electrons have more energy to overcome this potential.
  • Step 5: Conclude that since the stopping potential is directly related to the maximum kinetic energy, increasing it will increase the maximum kinetic energy of the emitted electrons.
  • Photoelectric Effect – The phenomenon where electrons are emitted from a material when it is exposed to light of sufficient frequency.
  • Stopping Potential – The minimum potential difference needed to stop the most energetic photoelectrons emitted from a surface.
  • Kinetic Energy of Electrons – The energy that an electron possesses due to its motion, which can be influenced by the stopping potential in a photoelectric experiment.
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