Question

when a ray of light is incident on a glass block at 30 degree to the refracting surface find the angle of incidence

Answer 1

r = 30, i = ?,

the refractive index is 1.5

Step-by-step explanation:

By Snell's law,

n = sin i / sin r

sin i = n × sin r

sin i = 1.5 × sin 30

i = 48.6