A physics student proved that, sunlight consists of different colour's and even gives two examples to supprot this. Explain.

Explanation

(i) The rainbow formed due to passage of sunlight (white coloured light) through water droplets contains seven colours.
(ii) When we blow a soap-bubble we can see different colours.
(iii) When white light (sun light) reflects from the surface of compact disk, we see many colours.
(iv) When light is allowed to pass through a prism, we see a band of seven colours.
`:.` From the above facts he concluded that the light from the sun is a mixture of colours.