Consider a thick lens of the form shown in Fig. 4.14; the radii of curvature of the first...

Consider a thick lens of the form shown in Fig. 4.14; the radii of curvature of the first and second surfaces are – 10 cm and +20 cm respectively and the thickness of the lens is 1.0 cm. The refractive index of the material of the lens is 1.5. Determine the positions of the principal planes.

[ Ans. du1= 20/91 cm, du2 = – 40/91 cm]