What are the evidence in favour of dual behaviour of electron?

Explanation

The particle nature of electron can be explained by the plained by the photoelectric effect and Planck's Quantum Theory .
When light falls on the surface of a metal , electrons are ejected from the surface with some kinetic energy by absorbing energy in the form of quantum . The kinetic energy of photo electrons is directly proportional to frequency . Kinetic energy of photoelectrons is independent of intensity because increase energy does not affect the energy of photons rather it simply increases the number of photons falling on the surface of metal and hence the number of photo-electrons . This proves the particle nature of electrons.
The wave nature of electrons was verified experimentally by Davisson and Germer by carrying out diffraction experiments with a beam of fast moving electrons . This wave nature of electrons is utilised in the construction of electron microscope.
From the evidences of photoelectric effect in favour of particle nature and also from the evidences of experiments conducted by Davisson and Germer in favour of wave nature , we can conclude that electron has dual nature .