A ray of light perpendicular to a medium produces a refracted ray measuring 45º. *

True
False

You seem to have an identity problem -- Bruh/Bob/Richard! Please use the same name for all of your posts.

T or F?

False.

When a ray of light enters a medium perpendicularly, it does not undergo refraction. The angle of incidence is zero degrees, and according to Snell's Law, the angle of refraction would also be zero degrees.