Answer:
Explanation:
Refraction is a phenomenon that occurs when light passes through the interface between two mediums.
When this occurs, the ray of light changes speed and also changes direction, according to Snell's Law:
is the index of refraction of the 1st medium
is the index of refraction of the 2nd medium
is the angle of incidence (the angle between the incident ray and the normal to the boundary)
is the angle of refraction (the angle between the refracted ray and the normal to the boundary)
For this problem we have:
is the index of refraction of the 1st medium (air)
is the index of refraction of the 2nd medium
is the angle of incidence
Solving for the angle of refraction, we find: