The f-number lens setting of a camera varies directly as the square root of the time t
Question:
The f-number lens setting of a camera varies directly as the square root of the time t that the film is exposed. If the f-number is 8 (written as f/8) for t = 0.0200 s, find the f-number for t = 0.0098 s.
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Lets use the formula for direct variation y kx where y is the fnumber x is the square root of the ...View the full answer
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Related Book For 
Basic Technical Mathematics
ISBN: 9780137529896
12th Edition
Authors: Allyn J. Washington, Richard Evans
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