You have a set of converging lenses with focal lengths 1.00 cm, 10.0 cm, 50.0 cm, and 80.0 cm.
(a) Which two lenses would you select to make a telescope with the largest magnifying power? What is the angular magnification of the telescope when viewing a distant object?
(b) Which lens is used as objective and which as eyepiece?
(c) What should be the distance between the objective and eyepiece?