Question: A physicist lost in the mountains tries to make a telescope using the lens from his reading glasses. They have powers of +2.0 D and

A physicist lost in the mountains tries to make a telescope using the lens from his reading glasses. They have powers of +2.0 D and +4.5 D, respectively.
(a) What maximum magnification telescope is possible?
(b) Which lens should be used as the eyepiece?

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