A ray of light perpendicular to a medium produces a refracted ray measuring 45º. *
True
False
one of the parameters affecting refraction is the angle of the incoming ray
this "angle of incidence" is measured relative to a normal to the surface
if the incident ray is perpendicular to the medium, then the angle of incidence is zero; and there is no refraction
False
When a ray of light is perpendicular to a medium (incident angle = 0°), there is no refraction and hence no refracted ray is formed. The incident ray continues in the same direction without changing its path.