The cutoff frequency for a certain element is 1.22 x 1015 Hz this is its
work function in eV that is Work done = 5.05 eV.
What is supposed through a piece function?
Definition of labor function is the power this is wished for a particle to return back from the indoors of a medium and spoil via the surface —used particularly of the photoelectric and thermionic emission of electrons from metals paintings function.
- Work function = hf
- h= planks constant.
- f= frequency.
- W = 6.626 10^-34 1.22* 10^15.
- W = 8.08 10^-19 / ( 1.6 10^-19)
- W = 5.05 eV.
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