Answer: independent of the light intensity.
- A independent of the light intensity
- B proportional to the intensity
- C inversely proportional to intensity
- D proportional to intensity squared
Correct answer: A. independent of the light intensity
Explanation: Stopping potential depends on frequency, not intensity; it is independent of the light intensity.
In the photoelectric setup, light striking the metal plate ejects electrons that cross the evacuated tube to the collector, producing a measurable current on the ammeter.
Concept context
Photoelectric effect, de Broglie waves, Bohr's model, atomic spectra.