Why do we need a prism for the dispersion of light?
Open in App
Solution
Dispersion in a prism:
Dispersion is the separation of white light into distinct colors when it is transmitted to a prism.
White light is dispersed when it passes through the glass prism because different colors of light are refracted at different angles by the glass prism.
The wavelength of light affects both the substance's index of refraction and the speed of light in that material. Light waves with different wavelengths and consequently distinct colors are refracted through different angles because the refractive index relies on the wavelength of the light wave.
