(II) Suppose that a correct exposure is 550 s at / / l l .
Chapter 33, Problem 33.37(choose chapter or problem)
(II) Suppose that a correct exposure is 550 s at / / l l . Underthe same conditions, what exposure time would be neededfor a pinhole camera ( 36) if the pinhole diameter is1.0 mm and the film is 7.0 cm from the hole?
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