When a ray of light is incident normally on an air- glass interface, its angle of refraction is? by Sunday | Aug 29 | Physics WAEC | 0 comments A. 0° B. 42° C. 45° D. 60° E. 90° Correct Answer: Option A – 0° Users Also Read These:A beam of light is incident from air to water at an…A ray of light is incident normally on a plan…A ray of light is incident on mirror m1 and after…The angle of incidence of a ray of light on a plane…A ray of light is incident on a plane mirror at an…