The wavelength of ejected electrons is determined by the energy of the incident photons. According to the de Broglie relation, the wavelength is inversely proportional to the kinetic energy of the electrons. As the energy of the incident photons increases, the wavelength of the ejected electrons decreases.
The wavelength of ejected electrons can be measured using a device called an electron spectrometer. This instrument uses electric and magnetic fields to deflect the electrons and determine their wavelength based on their kinetic energy and velocity.
The wavelength of ejected electrons is affected by the energy of the incident photons, the properties of the material being used (such as its work function), and the intensity of the incident light. Additionally, the angle of incidence and the composition of the material can also influence the wavelength.
In the photoelectric effect, the energy of the incident photons must be equal to or greater than the work function of the material in order to eject electrons. The wavelength of the ejected electrons is then determined by the energy of the photons and the properties of the material, as discussed in the de Broglie relation.
The wavelength of ejected electrons is important in understanding the nature of matter and its interactions with light. It provides insight into the quantum mechanical properties of electrons and how they behave in different materials. Additionally, studying the wavelength of ejected electrons can help us better understand phenomena such as the photoelectric effect and the dual nature of light as both a wave and a particle.