The photoelectric effect supports the quantum nature of light because:
PHYSICS · Multi correct · A Level · Physics · Particles and radiation · Particles and radiation
Problem
The photoelectric effect supports the quantum nature of light because:
(1) There is a minimum frequency of light below which no photoelectrons are emitted.
(2) The maximum kinetic energy of photoelectrons depends only on the frequency of light and not on its intensity.
(3) Even when the metal surface is faintly illuminated, the photoelectrons leave the surface immediately.
(4) The electric charge of the photoelectrons is quantised.