What is the relationship between the number of emitted electrons and the intensity of light in the photoelectric effect?
Correct Answer: The number of emitted electrons increases with the intensity of light.
- Step 1: Understand the photoelectric effect. This is when light hits a material and causes it to emit electrons.
- Step 2: Know that light has both intensity and frequency. Intensity is how bright the light is, and frequency is related to the color of the light.
- Step 3: Learn about the threshold frequency. This is the minimum frequency of light needed to emit electrons from the material.
- Step 4: If the frequency of the light is above the threshold frequency, the light can cause electrons to be emitted.
- Step 5: The intensity of the light affects how many photons (light particles) hit the material. More photons mean more chances to emit electrons.
- Step 6: Therefore, if the intensity of the light increases (while keeping the frequency above the threshold), more electrons will be emitted.
- Step 7: Conclude that the number of emitted electrons is directly proportional to the intensity of light, as long as the frequency is sufficient.
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