In the photoelectric effect, what happens to the kinetic energy of emitted electrons if the intensity of light is increased while keeping frequency constant?
Practice Questions
1 question
Q1
In the photoelectric effect, what happens to the kinetic energy of emitted electrons if the intensity of light is increased while keeping frequency constant?
Increases
Decreases
Remains the same
Becomes zero
The kinetic energy of emitted electrons remains the same as it depends on the frequency, not intensity.
Questions & Step-by-step Solutions
1 item
Q
Q: In the photoelectric effect, what happens to the kinetic energy of emitted electrons if the intensity of light is increased while keeping frequency constant?
Solution: The kinetic energy of emitted electrons remains the same as it depends on the frequency, not intensity.
Steps: 5
Step 1: Understand the photoelectric effect. This is when light hits a material and causes it to emit electrons.
Step 2: Know that the energy of the emitted electrons depends on the frequency of the light, not the intensity.
Step 3: Remember that frequency is how fast the light waves oscillate, while intensity is how bright the light is.
Step 4: If you keep the frequency of the light the same and only increase the intensity, you are making the light brighter but not changing its frequency.
Step 5: Since the kinetic energy of the emitted electrons depends only on the frequency, it will stay the same even if the intensity increases.
