Threshold frequency - Threshold frequency Definition & Meaning

An increase in the intensity of the same monochromatic light so long as the intensity is not too high , which is proportional to the number of photons impinging on the surface in a given time, increases the rate at which electrons are ejected—the photoelectric current I—but the kinetic energy of the photoelectrons and the stopping voltage remain the same.

In 1887, observed the photoelectric effect and reported on the production and reception of electromagnetic waves.

Suppose that, the energy of an incident photon is E and the work function of the metal is W.

To use this online calculator for Threshold frequency in photoelectric effect, enter Work function of the surface of the metal phi and hit the calculate button.