Answer: more photoelectrons with the same maximum KE.
- A more photoelectrons with the same maximum KE
- B fewer photoelectrons
- C photoelectrons of higher maximum KE
- D no change in emission
Correct answer: A. more photoelectrons with the same maximum KE
Explanation: Higher intensity means more photons per second, so more photoelectrons, but the maximum KE (set by frequency) is unchanged.
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.