Physics · Dual Nature of Radiation and Matter
Which of the following observations from the photoelectric effect experiment can only be explained by the quantum nature of light?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1There exists a minimum threshold frequency of incident radiation below which no photoelectrons are emitted, regardless of intensity.✓
- 2The maximum kinetic energy of photoelectrons depends only on the frequency of the incident radiation.
- 3When a metal surface is illuminated, there is a significant time lag before electrons are ejected.
- 4The photoelectric current decreases as the intensity of the incident radiation increases.
Correct answer
There exists a minimum threshold frequency of incident radiation below which no photoelectrons are emitted, regardless of intensity.
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