What happens to the number of emitted electrons if the intensity of the light is increased while keeping the frequency above the threshold?
Practice Questions
1 question
Q1
What happens to the number of emitted electrons if the intensity of the light is increased while keeping the frequency above the threshold?
The number of emitted electrons decreases
The number of emitted electrons increases
The energy of each emitted electron increases
No effect on the number of emitted electrons
Increasing the intensity of light increases the number of photons, which in turn increases the number of emitted electrons, provided the frequency is above the threshold.
Questions & Step-by-step Solutions
1 item
Q
Q: What happens to the number of emitted electrons if the intensity of the light is increased while keeping the frequency above the threshold?
Solution: Increasing the intensity of light increases the number of photons, which in turn increases the number of emitted electrons, provided the frequency is above the threshold.
Steps: 5
Step 1: Understand that light is made up of tiny particles called photons.
Step 2: Know that each photon can knock out one electron from a material if the light's frequency is high enough (above the threshold).
Step 3: Realize that increasing the intensity of light means you are increasing the number of photons hitting the material.
Step 4: Since each photon can potentially emit one electron, more photons mean more chances to emit electrons.
Step 5: Conclude that if the frequency is above the threshold, increasing the intensity will lead to more emitted electrons.
