Question

a ray of light is incident at an angle of 30. what is the angle of refraction when it is travelling from air to glass of refractive index 1 .5 ?

Answer 1

sin i/sin r = constant = refractive index
sin 30/sin r = 1.5
sin r = sin 30°/1.5
sin r = (1/2)/1.5
= 1/3
= 0.32
angle of Refraction will be equal to 0.32°