In 2 to 3 sentences, explain how the photoelectric effect supports a particle model of electromagnetic radiation. As part of your response, evaluate the idea that radiation frequency and intensity highlight how the wave model is inadequate to explain the photoelectric effect

Answer 1

The photoelectric effect occurs when light of a certain frequency and intensity strikes a metal surface, causing electrons to be emitted. This phenomenon can be explained by the particle model of electromagnetic radiation, as it suggests that light behaves as individual particles called photons. The fact that the photoelectric effect is dependent on the frequency and intensity of the incident light supports the particle model, as it shows that light energy is quantized and carried by discrete packets of energy rather than continuous waves. This challenges the wave model, which would predict a gradual increase in electron emission with increasing intensity, rather than the sharp threshold observed in the photoelectric effect.