Question

what is photoelectric effect?​

Answer 1

Answer:

Phenomenon in which electrically charged particles are released from or within a material when it absorbs electromagnetic radiation. The effect is often defined as the ejection of electrons from a metal plate when light falls on it.

Answer 2

$\pmb{Photoelectric~ effect:-}$

The photoelectric effect is a phenomenon in which electrons are ejected from the surface of a metal when light is incident on it.

These ejected electrons are called photoelectrons.