DISPERSION OF LIGHT IN PRISM

• light travels in the form of waves,
• white light is composed of waves of diffrent wavelengths.
• the different colours of light are due to different wavelengh.
• red colour has maximum wavelength while violet has minimum.
• because of this the refractive index of the material for violet is greater than red,
• rays of different colour are deviated through prism.
• this seperation of colours gives rise to dispersion of light.