A telephoto lens with focal length of 120mm has f-numbers
A telephoto lens with focal length of 120mm has f-numbers ranging from f/2.8 to f/22.
Part A What is the diameter of the lens aperture at f/2.8? in millimeters
Part B What is the diameter of the lens aperture at f/22?
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The length of country and western songs is normally distributed and has a mean of of 170 seconds with a standard deviation of 49 seconds. find the probabality that a random collection of 16 songs will have a mean of 158.30 seconds or less?
A telephoto lens with focal length of 120mm has f-numbers ranging from f/2.8 to f/22, What is the diameter of the lens aperture at f/2.8? in millimeters
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