Question

(b) Describe briefly how wave nature of moving electrons was
established experimentally.​

Answer 1

Answer:

In order to establish the wave nature of electrons an experiment was performed by Davison and Germer.

i) A fine beam of accelerated electrons obtained from electron gun is made to fall normally on the surface of nickel crystal.

ii) Incident electrons are scattered in different directions by the atoms of the crystals.

Answer 2

Answer:

In 1924 Louis de Broglie introduced the idea that

particles, such as electrons, could be described

not only as particles but also as waves. This was

substantiated by the way streams of electrons

were reflected against crystals and spread

through thin metal foils.