Thus, the work function is expressed in the same unit as that of the energy of the photon. Photoelectric work function of metal is 3.2 ev. The threshold wavelength ( more commonly threshold frequency) is the wavelength/ frequency of a photon with just sufficient energy to liberate an electron.
If The Work Function Of The Photo Emitter Is 4 Ev, Find The Wavelengths Of Radiation.
The formula of threshold frequency is w= hv 0. The symbolic representation of the formula given above can be seen as: Go through again with a calculator and keep a close eye on significant figures.
M A X To Find The Work Function Of The Metal, We Can Substitute The.
Get the huge list of physics formulas here. Where e is the maximum energy, h is planck's constant and Ο is the work function. How do we measure work?
For Polycrystalline Silver A Value Of 4.26 Ev Has Been Measured, But For A Single Crystal A Value Of 4.74 Ev Has Been Measured For The (111) Face, With Intermediate Values Of 4.64 Ev (100) And 4.52 Ev.
Substituting equation (2) in equation (1) we get Wavelength = (speed of the wave)/(frequency of the wave) as mentioned above, all the quantities are represented by a symbol. Given that, e k = 0.73 ev and w = 1.82 ev.
W A V E L E N G T H = W A V E S P E E D F R E Q U E N C Y {\Displaystyle Wavelength= {\Frac {Wavespeed} {Frequency}}}.
The wave velocity v = 340 m/s, and the frequency f = 20.0 cycles/s.the wavelength ? The formula for calculating wavelength is: Ie photon energy = work function.