Just so, what is the phenomenon of splitting of white light into seven Colours is called?
The phenomenon of splitting of white light into its seven constituent colours when it passes through a glass prism is called dispersion of white light. The band of seven colours is called the spectrum.
Subsequently, question is, what is the phenomenon of splitting up of white light into its constituent seven Colours known as what is the cause of this phenomenon which is the maximum and least deviated Colour when white light passes through a prism? dispersion
Secondly, what is the phenomenon of splitting of white light into different Colours?
dispersion
Why do white light split into 7 Colours when it passes through prism?
when passing through aprism, dispersion of light (white light) happens wherein it splits into it's seven constituent colours. Different colors of different wavelength experience different degree of deviation and hence when put through refraction,white light splits into its constituent colors.