A telescope has an angular magnification of 250. when operated with a 20. mm eyepiece. What is the focal length of the objective?
A) 5.0 cm
B) 25. meters
C) 5000. cm
D) 5.0 meters
E) 2.5 m
D
Physics & Space Science
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Answer the following statement true (T) or false (F)
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Fill in the blank(s) with correct word
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What will be an ideal response?
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