Photoelectric Work Function of a Cesium Surface Is 4 eV. What is the maximum K.E. of photoelectrons emitted by the light of frequency 10 Hz incident on the surface.
Understanding the photoelectric work function of cesium is essential in the study of the photoelectric effect. This concept is important for Class 10, NEB, SEE, and CTEVT Physics exams.
Definition
The work function of a material is the minimum energy required to remove an electron from its surface. For cesium, the work function is 4 eV, meaning an incoming photon must have energy ≥ 4 eV to release an electron.
Explanation
When light of frequency f strikes the cesium surface, the energy of the photons (E = hf) must be greater than or equal to the work function (ϕ = 4 eV). Any excess energy is converted into the kinetic energy of the emitted electrons.
Cesium is often used in photoelectric experiments due to its low work function, which allows emission of electrons with visible light.
Photoelectric Work Function of a Cesium Surface Is 4 eV. What is the maximum K.E. of photoelectrons emitted by the light of frequency 10 Hz incident on the surface.
Keywords
photoelectric work function of cesium, work function, photoelectric effect, Class 10 physics, NEB physics, SEE physics, CTEVT physics, electron emission, photon energy, physics numericals, exam oriented physics, physics notes, cesium properties, aklearning, current electricity
Tags
photoelectric work function, cesium, electron emission, photoelectric effect, Class 10, NEB, SEE, CTEVT, physics notes, exam question, photon energy, current electricity, aklearning, physics theory, education,Photoelectric Work Function of a Cesium Surface Is 4 eV. What is the maximum K.E. of photoelectrons emitted by the light of frequency 10 Hz incident on the surface.
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Photoelectric Work Function of a Cesium Surface Is 4 eV. What is the maximum K.E. of photoelectrons emitted by the light of frequency 10 Hz incident on the surface.