You wish to purchase a telescope that is easy to transport from one location to another. You finally decide on one with a barrel length of 1.55 m and an angular magnification of -81.5. Determine the following. (a) the focal length of the objective -1.5692 How are the focal lengths of the objective and eyepiece related to the angular magnification and the length of the barrel for a telescope? m (b) the focal length of the eyepiece 0.0192 How are the focal lengths of the objective and eyepiece related to the length of the barrel for a telescope? m

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