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A Department Store Sells an "Astronomical Telescope" with an Objective

Question 27

Multiple Choice

A department store sells an "astronomical telescope" with an objective lens of 30-cm focal length and a diameter of 5 cm,and an eyepiece lens of focal length 5 mm and diameter 4 mm.What is the magnifying power of this telescope?


A) 6 times
B) 150 times
C) 60 times
D) 12.5 times

Correct Answer:

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