A light ray leaves a block of fused quartz n1 146 at an angl

A light ray leaves a block of fused quartz, n1= 1.46, at an angle of 28 degrees and enters a block of flint glass, n2= 1.57. Find the angle at which the light enters the flint glass

Solution

From Snell\'s Law

n₁Sin(o₁)=n₂SIn(o₂)

1.42*sin28 = 1.57*sin(o₂)

o₂=sin^-1(1.42sin28/1.57)

o₂= 25.1^o