Question

A beam of light passes from air into a cube of zirconium if the angle of incidence is 40”what is the angle of refraction ?

Answer 1

50 degrees

Step-by-step explanation:

Usually in physics in solving such questions refractive index of air is taken as 1.00 (n=1.00) by assuming that air is a vacuum. Hence, the light ray passes from water to air at an angle of incident of 40 degrees, it means that it has angle of 50 degrees to the normal line.