SOLUTION: Relatively aperture. The relative aperture , or f-stop, of a 23.5mm diameter lens is directly proportional to the focal length F of the lens. If 250-mm focal length has an f-stop o

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Question 1135184: Relatively aperture. The relative aperture , or f-stop, of a 23.5mm diameter lens is directly proportional to the focal length F of the lens. If 250-mm focal length has an f-stop of 6.3, find the f-stop of a 23.5mm diameter lens with a focal lengh ot 90mm.



Thank you
Answer by ikleyn(52776) About Me  (Show Source):
You can put this solution on YOUR website!
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I don't know from which source you retrieved this problem, but its formulation is incorrect.