Consider a ray incident on an interface between air (n = 1) and glass (n = 1.5) at a 50◦angle, as shown in the figure below. The glass substrate is 1 cm thick. What is the distance d between the light ray exiting the substrate and the unaffected ray?

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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: