The focus and focal length of a spherical mirror are determined by its curvature. The focal length is equal to half the radius of curvature. The focus is located at the center of the mirror.
focus and focal length of a spherical mirror – ഗോളാകൃതിയിലുള്ള കണ്ണാടിയുടെ ഫോക്കസ്, ഫോക്കൽ ലെങ്ത്