Question

note on dispersion of light

Answer 1

Dispersion. Visible light is actually made up of different colors. Each color bends by a different amount when refracted by glass. That's why visible light is split, ordispersed, into different colors when it passes through a lens or prism. Shorter wavelengths, like purple and blue light, bend the most.

Answer 2

DISPERSION OF LIGHT-

THE SPLITTING OF WHITE LIGHT INTO ITS CONSTITUENT COLOURS WHEN IT PASSES THROUGH A GLASS PRISM IS CALLED DISPERSION. THE DISPERSION OF LIGHT OCCURS BECAUSE REFRACTIVE INDEX OF PRISM MATERIAL IS DIFFERENT FOR LIGHT OF DIFFERENT COLOURS.