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04-03-2021
Physics

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

6 inches
8 inches
4 inches
2 inches

A 2inch f4 reflector has a focal length of 6 inches 8 inches 4 inches 2 inches class=

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04-03-2021

I’m pretty sure it’s 8 sorry if I’m wrong

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