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:Give the relationship between the angle of rotation…A ray of light is incident at an angle of 30°on a…A ray of light strikes a plane mirror at an angle of…A ray of light strikes a plane mirror at a glancing…A beam of light is incident from air to water at an…