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Question: 

A Galilean telescope adjusted for a relaxed eye is 36.8 cm long. If the objective lens has a focal length of 39.0 cm, what is the magnification?

Source: Giancoli, Douglas C., Physics: Principles with Applications, 7th Edition, 2014.

Quick Answer: 

18X

Giancoli 7th Edition, Chapter 25, Problem 36

(1:40)

Chapter 25, Problem 36 is solved.

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