Part a what is the magnification of an astronomical, Ask an Expert

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Part A. What is the magnification of an astronomical telescope whose objective lens has a focal length of 79 cm and whose eyepiece has a focal length of 2.9 cm ? Follow the sign conventions. Express your answer using two significant figures.

Part B. What is the overall length of the telescope when adjusted for a relaxed eye? Express your answer to two significant figures and include the appropriate units.

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