G L Fig 3 19 the triangles C OQ and C OR are similar OC C Q1

Last updated: 6/24/2023

G L Fig 3 19 the triangles C OQ and C OR are similar OC C Q1 OC C R 12 OC C B OC C A C B OC C A OC OB OA Q ri r 1 BO r C B r C A 72 So the point O divides the thickness of the lens AB in a fi atio i e in ratio of the radii of curvature of the two surfaces Again OB OA OB OB OA OB A OB t me from