9 10 What is the focal length of a convex lens of focal

Last updated: 6/26/2023

9 10 What is the focal length of a convex lens of focal length 30 cm in contact with a concave lens of focal length 20 cm Is the system a converging or a diverging lens Ignore thickness of the lenses 11 A compound microscope consists of an objective lens of focal length 2 0 cm and an eyepiece of focal length 6 25 cm separated by a distance of 15 cm How far from the objective should an object be