What happens to the number of emitted electrons if the intensity of 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 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 electrons are emitted
Increasing the intensity of light increases the number of photons incident on the surface, leading to more emitted electrons, provided the frequency is above the threshold.
Questions & Step-by-step Solutions
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Q
Q: What happens to the number of emitted electrons if the intensity of light is increased while keeping the frequency above the threshold?
Solution: Increasing the intensity of light increases the number of photons incident on the surface, leading to more 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 an electron out of a material if the light's frequency is high enough (above the threshold).
Step 3: Realize that increasing the intensity of light means more photons are hitting the surface of the material.
Step 4: Since there are more photons, there are more chances for electrons to be knocked out.
Step 5: Conclude that if the frequency is above the threshold, increasing the intensity will result in more emitted electrons.
