14) With the help of a ray diagram explain the phenomenon of refraction of a ray through glass prism. Mark on the diagram - angle of prism, angle of incidence, angles of refraction, emergent ray and angle of deviation.
When light passes through one face of a prism it gets deviated, this is called refraction.
This deviation is different for different wavelengths of light. Since different colours of light have a different wavelength, the deviation for a different colour is different. As a result, when the light emerges from the other face of the prism we observe the seven constituent of light.This phenomenon of the splitting of light into its constituent Colors is called dispersion.Regards