Question
Aluminum has a frequency threshold of 9.846 × 1014 Hz. Which best explains what will happen when light with a frequency below the frequency threshold strikes aluminum?
Electrons will be ejected immediately.
No electrons will be ejected.
Electrons will start being ejected several seconds after the light strikes the aluminum.
No electrons will be ejected unless the intensity is very high.
Electrons will be ejected immediately.
No electrons will be ejected.
Electrons will start being ejected several seconds after the light strikes the aluminum.
No electrons will be ejected unless the intensity is very high.
Answers
GPT-4o mini
When light with a frequency below the threshold frequency strikes aluminum, the best explanation is:
**No electrons will be ejected.**
This outcome is due to the photoelectric effect, which states that electrons can only be ejected from a material when the incoming light has a frequency equal to or greater than the material's threshold frequency. Since the light in this scenario has a frequency below the threshold (9.846 × 10^14 Hz), it does not have enough energy to overcome the work function of aluminum, and therefore no electrons will be ejected.
**No electrons will be ejected.**
This outcome is due to the photoelectric effect, which states that electrons can only be ejected from a material when the incoming light has a frequency equal to or greater than the material's threshold frequency. Since the light in this scenario has a frequency below the threshold (9.846 × 10^14 Hz), it does not have enough energy to overcome the work function of aluminum, and therefore no electrons will be ejected.