Intensity

[Mariam Baghdasaryan 4F]

In the photoelectric effect, higher intensity does not necessarily mean greater amplitude right? Do we stop treating light like a wave once we consider it a photon?

[Julia Go 2L]

In the photoelectric effect, the intensity of light is proportional to the number of photons. Higher intensity just means that there is a greater number of photons present.

Electromagnetic waves have both particle and wave properties! You shouldn't think of light having only particle properties or only wave properties. Photons are the evidence that electromagnetic radiation behave like particles. However, there is evidence that electromagnetic waves behave like waves, such as diffraction.

[Letizia Ye 4F]

Higher intensity of light will not affect the amount of energy the ejected electrons will have. No matter how intense the light is, if it still does not have enough energy to surpass the threshold energy (work function), no electrons will be ejected. Frequency does affect the amount of energy of ejected electrons though!