When white light passes through a prism, then it splits into seven colours which are known as the dispersion of light. So after coming out of a prism, which of the colour of light scatters the least?

CONCEPT:

Dispersion of light:

• Dispersion of light is the phenomenon of splitting of a beam of white light into its constituent colours on passing through a prism.
• The band of seven colours so obtained is called the (visible) spectrum.
• The dispersion of white light occurs because the colours of white light travel at different speeds through the glass prism.

EXPLANATION:

• When the dispersion of white light takes place through a prism, the maximum deviation is suffered by violet colour and minimum deviation suffered red colour. Therefore option 1 is correct.