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:The refractive index of glass for yellow light is…When white light is incident on a glass prism the…A ray of light is incident at an angle of 30°on a…A ray of light is incident normally on a plan…When a ray of light is incident normally on an air-…