How the photo electrons are emitted?

Answer 1

A photon is a bundle of electromagnetic energy. They move constantly at the speed of light in a free space, as they are the most basic unit of light. They are emitted from a atomic, molecular, or nuclear transition to a lower energy level.

Answer 2

Energy is absorbed by atoms causing the electrons to 'jump' to an excited state.

When the electrons return to their 'ground' state or transition to any excited state less than when the energy was absorbed this energy difference in the 2 states is released as a photon.

Answer 3

All light possess both particle-like and wave-light attributes. Unlike mechanical waves that require a medium, electromagnetic waves are able to propagate even within a vacuum. Electromagnetic waves are described in terms of frequency, energy or wavelength. While photons are particles that consist of careful packets of energy, they are able to travel through space due to the wave-light properties of light. Physics is still unable to answer many basic questions regarding the nature of light. The speed of light varies through different mediums because photons can be absorbed, attracted and reflected even though they have no rest mass or mass itself. Since there is no medium to interact with in space, light is able to travel at faster speeds than when it moves through atmosphere. Gravity is the only force that is able to alter the speed at which light travels through space. The strong gravitational attraction of massive objects, such as black holes, is able to slow the speed at which light moves and may even be able to keep light from traveling at all. In basic terms, photons move at the speed of light because they have no mass and because their atoms that have no mass are so slightly touched but at weighing no mass, the slighest touch of the atmosphere slowed down by the strength of gravity causes the protons to move at around 28,948,151,611.651 kilometres per hour! Therefore, moving light at the same speed and becoming, the speed of light!

Answer 4

Photoelectrons are emitted when photons with sufficient energy strike a material surface and transfer enough energy to electrons in the material to overcome the binding energy holding them to the atom. This process, known as the photoelectric effect, results in the ejection of electrons from the material. The energy of the emitted photoelectron is related to the energy of the incident photon and the binding energy of the electron in the material.

Answer 5

Photoelectrons are emitted when light strikes a material.