Mathematics, 23.06.2019 14:00 JPU
When a photograph is taken, the exposure time, t is directly proportional to the square of the size, f , of the opening in the camera lens. t = 0.02 when f = 8. it can be shown that t = 1/3200 f squared. calculate the value of f when t = 0.0098
Answers: 2
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When a photograph is taken, the exposure time, t is directly proportional to the square of the size,...
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