A ray of light would change direction when (Check all that apply): A.) Changing mediums at an angle of 90° from the surface B.) changing mediums when directly in line with the surface normal C.) incident on a shiny, smooth surface D.) changing mediums at an angle of less than 90° from the surface

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Dispersion of White Light

Snell’s law is a formula that gives a relation between the angle of incidence and angle of refraction and is given as: