Answer: wave.
- A wave
- B particle
- C magnetic
- D thermal
Correct answer: A. wave
Explanation: Electron diffraction in the experiment demonstrated the wave nature of electrons.
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.