Dual Nature of Radiation and Matter part 01

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Hey friends, In this blog you will understand what is work function energy, Electron volt, photoelectric effect, experimental demonstration of photo electric effect, Effect of intensity of radiation on photo electric current and Effect of potential on photo electric current. So if you are curious for knowledge read our full blog. 







 


Dual nature of Radiation and Matter part 01




Work function Energy

It is the minimum energy required to remove the electron from the surface of any substance. 

Electron volt

Defined by the K.E of an accelerating electron on applying a P.D of one volt. 

1eV = K. E = W = Vq = electron × 1volt
                                     = 1.6 × 10(of power of -19) J

Photo electric effect

It is the phenomenon of producing current from the radiation, incident on a photosensitive metal sheet. 


Effect of intensity of radiation

         Shows that 
         Photo electric current is directly
               proportional to the intensity of radiation. 



 Effect of potential

          




• The potential at which photoelectric current      becomes zero is known as cut off Or stopping potential, denoted by Vo. 

• The saturation current is directly proportional to the intensity of incident radiation. 

• The stopping potential is independent to the intensity of incident radiation. 

• The maximum K. E of photo electrons does not depend on the intensity of incident radiation. 

• stopping potential depends on maximum K. E of photo electrons. 

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