Explain with the help of Einstein’s photoelectric equation any two observed features in photoelectric effect which cannot be explained by wave theory.

 

 

 

 
 
 
 
 

Answers (1)

 Einstein's photoelectric equation is given by

     h\nu=\phi +\frac{1}{2}mv^{2}

Where =  plank's constant

                h\nu =  energy of the photon

                 \nu =  frequency of proton

                \phi = work function 

            \frac{1}{2}mv^{2}= kinetic energy of the electron 

The above equation implies that the kinetic energy of emitted electrons is independent of intensity of light and a minimum threshold frequency is required for an electron to come out of the metal. Both of these are not explained by wave theory.

 

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