Question

explain the Einstein's equation for photoelectric efffect

Answer 1

The Einstein's equation for photoelectric effect

$h\nu=KE+W$,

$E=h\nu$ $-$ the energy carried by each particle of light (called quanta or photon);

$\nu$ is the light’s frequency;

$KE=\frac{mv^2}{2} -$ maximum kinetic energy of the electron;

$W -$ energy required to eject an electron.