Question

Where one can use the phenomenon of photoelectric effect?

Answer 1

When electromagnetic radiation, such as light, strikes a substance, the photoelectric effect causes electrons to be emitted. Photoelectrons are electrons released in this way.It's worth noting that the magnitude of the light incident on the metal's surface affects the emission of photoelectrons and the kinetic energy of the expelled photoelectrons. Photoemission is the term used to describe the mechanism by which photoelectrons are expelled from the metal's surface due to the action of light.

Complete answer:
The photoelectric effect occurs when electrons on a metal's surface gain energy from incident light and use it to overcome the attractive forces that bind them to the nuclei.The photoelectric effect is used to operate the photocell. The photocell is a device that works by using the photoelectric effect.

A photocell is an electronic system that converts light energy into electrical energy. Electrons can be removed from the metal surface by photons of a suitable wavelength. When the emitter terminal of a battery is wired to the negative ($- ve$) terminal and the collector terminal to the positive ($+ ve$) terminal.

When the frequency of the radiation exceeds the material's threshold frequency in the emitter, photo tons emission occurs. In the direction of the collector, photon electrons are involved. As compared to the emitter terminal, the collector terminal is positive. As a result, the circuit would have a current flow. The photoelectric current will increase as the intensity of the radiation increases.

Note: To draw inferences regarding the properties of atoms, molecules, and solids, condensed matter physics, solid state chemistry, and quantum chemistry study the phenomenon. The effect is used in electronic devices that are designed to detect light and emit electrons at a precise time.