a. Name the experiment which establishes the wave nature of moving electrons.
b. In that experiment, electrons are accelerated through a potential of 54 V and is made to fall normally on the nickel crystal of interatomic separation 0.91 A. Draw the polar graph showing the variation of intensity of the scattered electrons electrons and latitude angle at this potential.
c. Calculate the d-Broglie wavelength of the electron.

Explanation

a. Davisson-Germer experiment.
b.
c. Intensity decreases with latitude angle and then increases to maximum at `50^(@)`
d. `lambda=(h)/(p)=(h)/(sqrt(2mE))=(6.63xx10^(-34))/(sqrt(2xx9.1xx10^(-31)xx5.4xx1.6xx10^(-19)))=1.67Å`