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justification of dual nature of electron

  Particle nature:  when an electron strikes a ZnS screen  it produced a spot called scintillation .which is localised and spread like a wave .this suggested that electron behave like a particle.

wave nature: when electrons we're made to strike against nickel crystal,  concentrating ( having common centre)  were formed these rings are called diffraction rings. this explains wave nature of electron.


 some important values:

 c = velocity of light =3×10^8m/s.
h= Planck constant =6.626×10^-34kgm^2s^-2.
√= wavelength (lamda)
v= frequency =c/√


numerical related to de broglie principle in next page 
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