Question

Derive the relation between refractive index of a medium and its critical angle

Answer 1

Answer:

n= 1 / sin C

Explanation:

n1 sin I = n2 sin r

n1/ n2 = sin r / sin I

n1/ n2 = sin 90 / sin c= 1/ sin c

n = 1/ sin c

because I= c when r= 90 °