Question

What is photoelectric effect?
Photon energy?

Answer 1

The photoelectric effect is the emission of electrons or other free carriers when light shines on a material. Electrons emitted in this manner can be called photo electrons.According to classical electromagnetic theory, this effect can be attributed to the transfer of energy from the light to an electron.

Answer 2

The emission of photoelectrons from a metal surface when light of suitable frequency strikes on it is termed as photo electric effect

Photon energy is the energy carried by a single photon. The amount of energy is directly proportional to the photon's electromagnetic frequency and inversely proportional to the wavelength. ... Photon energy is solely a function of the photon's wavelength.

Hope this helps