What is the relationship between the stopping potential and the maximum kinetic

Practice Questions

Q1
What is the relationship between the stopping potential and the maximum kinetic energy of the emitted electrons in the photoelectric effect?
  1. Stopping potential is directly proportional to the work function
  2. Stopping potential is inversely proportional to the maximum kinetic energy
  3. Stopping potential is equal to the maximum kinetic energy
  4. Stopping potential has no relation to the photoelectric effect

Questions & Step-by-Step Solutions

What is the relationship between the stopping potential and the maximum kinetic energy of the emitted electrons in the photoelectric effect?
  • Step 1: Understand the photoelectric effect. This is when light hits a material and causes it to emit electrons.
  • Step 2: Know that when electrons are emitted, they have kinetic energy, which is the energy of motion.
  • Step 3: The maximum kinetic energy (KE) of the emitted electrons depends on how much energy they get from the light.
  • Step 4: The stopping potential (V) is the voltage needed to stop these emitted electrons from moving.
  • Step 5: There is a relationship between the stopping potential and the maximum kinetic energy of the electrons.
  • Step 6: This relationship is given by the equation KE = eV, where 'e' is the charge of an electron.
  • Step 7: This means that the maximum kinetic energy of the electrons is equal to the charge of the electron multiplied by the stopping potential.
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