Question

A ray of light is incident on a medium with Angle of incidence I and is refracted into a second medium with angle of refraction r the graph of sin I versus sin r is as shown find the ratio of velocity of light in the first medium to the velocity of light in the second medium

Answer 1

Using Snell's Law

n1 sin(theeta)1 = n2 sin(theeta)2

n1 sin(I) = n2 sin(R) {Where n is the medium}