What do you mean by dispersion of light ? What is a spectrum of light? Name the different colours of light in the proper sequence in the spectrum of white light.
OR
What do you mean by dispersion ? Name the different colours of light in the proper sequence in the spectrum of white light.

Explanation

The process of separation of light into its component colours while passing through a medium is called dispersion of light.
The band of coloured components of a light beam is called spectrum.
The different colours of light in the spectrum of white light are violet, indigo, blue, green, yellow, orange and red.