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

Practice Questions

Q1
In a photoelectric experiment, if the stopping potential is increased, what does it indicate about the emitted electrons?
  1. They have higher kinetic energy
  2. They have lower kinetic energy
  3. They are emitted at a lower rate
  4. They are not emitted

Questions & Step-by-Step Solutions

In a photoelectric experiment, if the stopping potential is increased, what does it indicate about the emitted electrons?
  • Step 1: Understand what stopping potential means. It is the voltage needed to stop emitted electrons from reaching the detector.
  • Step 2: Know that emitted electrons come from a material when light hits it in a photoelectric experiment.
  • Step 3: Realize that when light hits the material, it gives energy to the electrons, allowing them to escape.
  • Step 4: If the stopping potential is increased, it means that the electrons are moving faster and have more energy.
  • Step 5: Conclude that a higher stopping potential indicates that the emitted electrons have higher kinetic energy.
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