The Work Function For Photoelectric Effect (A) Is Different For Different Metals (B) Is Same For All Metals (C) Depends Upon The Intensity Of Incident Light (D) Depends Upon The Frequency Of Incident Light.
The work function for platinum is 5.65 ev. The si unit of work is the joule (j), which is defined as the work done by a force of 1 newton in moving an object through a. For example, different crystallographic surfaces of the same metal or compound can have substantially different work functions.
However In Practice There May Be Very Small Side Effects E.g.
The minimum amount of energy that is required to eject an electron from the metal surface is known as the work function. The work function is not a characteristic of a bulk material, but rather a property of the surface of the material. Work function is different for different metals.
A Property Whose Value Doesn’t Depend On The Path Taken To Reach That Specific Value Is Known To As State Functions Or Point Functions.in Contrast, Those Functions Which Do Depend On The Path From Two Points Are Known As Path Functions.
The minimum energy required to eject the electrons from the surface of metal (hv0. The work function (or workfunction) is defined as the minimum amount of thermodynamic work (i.e. On the other hand side, platinum is the highest knowing metal work function and the lowest work function metal is cesium.
All Previous Attempts To Theoretically Calculate Wf Came Down To Two Stages;
Let us consider the work function of. The minimum energy required for the electron emission from the metal. Any excess energy is given to the electron as kinetic energy.
Does Photoelectric Current Depends On Light Intensity?
Θ is the angle between the force vector and the displacement vector; Energy) needed to remove an electron from a solid to a point in the vacuum immediately outside the solid surface. In the photoelectric effect if a photon with an energy greater than the work function is incident on a metal photoelectric emission occurs.