P2. (1 point) An optical system consists of an aperture D of dimeter 2.5 cm located at 9 cm of a converging thin lens L1 with diameter 4 cm and focal length 5 cm. At 15 cm from L1 there is a second converging lens L2 of diameter 6 cm and focal length 8 cm. determine the aperture stop of the system when a) The object O that illuminates the optical system is at 10 cm in front of (to the left of) Li. bThe object point O is at infinity -
L.
D