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Pls help asap! What is the focal length of a 3-inch f/7 mirror? A. 0.43 inches B. 2.3 inches C. 21 inches
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5 votes
Pls help asap!

What is the focal length of a 3-inch f/7 mirror?
A. 0.43 inches
B. 2.3 inches
C. 21 inches

User Blank EDjok
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1 Answer

4 votes
I think the answer is c
User Libbux
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