Define dispersion of white light and name the colours of white light in order.

(N/A) The phenomenon of splitting of white light into its constituent seven colours when passing through a glass prism is known as the dispersion of light.
When white light passes through a prism,it disperses into the following colours in the order of increasing wavelength (from violet to red): $Violet$,$Indigo$,$Blue$,$Green$,$Yellow$,$Orange$,and $Red$ (often remembered by the acronym $VIBGYOR$).