K.E. of photoelectron was determined by:

 

 

a) frequency of light (color)

 

 

     

 

 

 

             Photoelectric Effect Video
Rutgers U.

 

 

b) nature of emitting metal

 

 

Typical Plot of Frequency of
Light vs. K.E. of Photoelectron

 

 

 

KE of
Photoelectron

 

 

 

fo - threshold frequency - frequency below which no photoelectrons will be emitted

 

Below Threshold?

 

 

No Emission

 

 

 

 

 

 

 Above Threshold?

 

 

 

 Emission