Question

Explain Dispersion of light.

Answer 1

White light is made up of different colors of light. Different color of light moves with different speed in different medium.

In Physics, 'dispersion' is the property by which light spread out according to its color as it passes through an object. For example, when you shine a white light into a prism , all of the different colors of light are bent different angle, so they spread out and make a rainbow. This works because of the fact that different colors of light actually have different wavelengths. (The wavelength is the distance between the peaks in the wave.) Light interacts with the molecular structure of the prism differently depending on its wavelength. So different wavelengths of light are bent different amounts.