Question: Galileo's first telescope used a convex objective lens and a concave eyepiece, as shown in FIGURE 27-29. When this telescope is focused on an infinitely

Galileo's first telescope used a convex objective lens and a concave eyepiece, as shown in FIGURE 27-29. When this telescope is focused on an infinitely distant object, it produces an infinitely distant image.

(a) What is the focal length of the eyepiece of a Galilean telescope that has an objective focal length of 1.25 m and a magnification of +4.00?

(b) How far apart are the two lenses?

In figure 27-29

Object Eyepiece Objective

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