When the angle of incidence is equal to the angle of reflection in a spherical mirror, it is known as the “normal incidence” condition. This occurs when a light ray is incident on the mirror surface at a 90 degree angle.
when the angle of incidence and angle of reflection are equal in spherical mirror – ഗോളാകൃതിയിലുള്ള കണ്ണാടിയിൽ പതന കോണും പ്രതിഫലന കോണും തുല്യമാകുമ്പോൾ