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A 2-inch, f/4 reflector has a focal length of:

A 2-inch, f/4 reflector has a focal length of:
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A 2-inch, f/4 reflector has a focal length of:

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User Vibhutha Kumarage
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1 Answer

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Answer: The focal length would be four inches

hope this helps

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User Richard Nienaber
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