question

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

 

 

 

 

 

 

 

 

einstein's photoelectric equation is given by

 

where = plank's constant

= energy of the photon

 = frequency of proton

= work function

= 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.