Name: Dual Nature of Light and Matter
Uploaded: 2019-07-19
Duration: 7 min 31 s
Description: Light has a dual nature. It is both a wave and a particle. Explore this video about the wave and particle nature of light and the wavelength corresponding to...

Question

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

Accepted Answer

The evidences that favour the dual behaviour of electron are as follows:
(a) Black body radiation and photoelectric effect shows the particle like nature of electron.

(b) Electromagnetic radiation shows the wave nature of electron.

(c) The double slit experiment proves the dual behaviour of electron. Electrons shot at a double slit produces an interference pattern on a screen placed behind the double slits, much like waves would do. This verifies that electron particles also have a wave nature and have a de-Broglie wavelength given by:
$λ = \frac{h}{p} = \frac{h}{mv}$

Where, $p$ is the momentum of the moving electron.
However, when the electrons are observed and measured as they pass the double slit, the interference pattern vanishes and is replaced with two bands on the screen, indicating a particle nature. The conclusion is thus that all waves have particle properties and all particles have wave properties, and which property becomes more dominant depends on the situation and observation being made.

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