Photoelectric Effect Photoelectric Effect

The reversed bias can measure the maximum velocity of ejected electron.
 1
2
 mvmax2 = eVs  .


[Classical view] 1/2mvmax2 correlates with intensity of incoming light beam, but not the wavelength of the light.


[Observed fact] 1/2mvmax2 is independent of incoming beam intensity, bit it is directly correlated with the frequncy of the beam.


 1
2
 mvmax2 = hf-F
Here F is the workfunction which is the binding energy for the least bounded electron inside metal.



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On 15 Sep 2004, 15:53.