What happens to the kinetic energy of emitted electrons if the frequency of inci
Practice Questions
Q1
What happens to the kinetic energy of emitted electrons if the frequency of incident light is increased beyond the threshold frequency?
It decreases
It remains constant
It increases linearly with frequency
It becomes zero
Questions & Step-by-Step Solutions
What happens to the kinetic energy of emitted electrons if the frequency of incident light is increased beyond the threshold frequency?
Step 1: Understand that light can cause electrons to be emitted from a material when it hits the surface.
Step 2: Know that there is a minimum frequency of light, called the threshold frequency, needed to emit electrons.
Step 3: If the frequency of the light is equal to or greater than the threshold frequency, electrons can be emitted.
Step 4: When the frequency of the light is increased beyond the threshold frequency, the extra energy from the light goes into the kinetic energy of the emitted electrons.
Step 5: This means that as the frequency increases, the kinetic energy of the emitted electrons also increases.
Step 6: The relationship between the increase in frequency and the increase in kinetic energy is linear, meaning if you double the frequency, the kinetic energy increases in a predictable way.
