When ultraviolet light is incident on certain metallic particles are emitted. These particles are called by Sunday | Mar 23 | Physics WAEC | 0 comments A. positrons B. protons C. photoelectrons D. photons Correct Answer: Option D – photons Users Also Read These:A ray of light strikes a plane mirror at a glancing…A ray of light incident at an angle θ in a…A ray of light is incident on mirror m1 and after…When a ray of light is incident normally on an air-…The refractive index of glass for yellow light is…