See attached for exact description and figure.
The diagram above illustrates Galileo's original telescope. He used a convex objective lens with a focal length of 1.7m and a concave eyepiece as illustrated above. When this telescope is focused on an indefinitely distant object, its angular magnification is +3.
a. What is the focal length of the eyepiece?
b. What is the distance d between the two lenses?
Galileo's original telescope is investigated in the solution.