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wrote...
Valued Member
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Posts: 3560
12 years ago
The length of a telescope is 2.20 m and the focal length of the eyepiece is 1.9 cm. What is the focal length of the objective?
A) 41 cm
B) 45 cm
C) 111 cm
D) 218 cm
E) 16 cm
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Valued Member
12 years ago
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