28 A beam is incident on a tube containing two convex lenses

Last updated: 6/8/2023

28 A beam is incident on a tube containing two convex lenses of focal length 15 cm and 20 cm as shown If the diameter of incident beam is 10 cm find the diameter of final beam a C 40 3 50 3 cm cm A lens is b d 20 3 25 3 cm cm