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?
It increases
It decreases
It remains the same
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.
