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A radiograph is made using film X with an exposure of 10 mA-min. Film density in the area of interest is 1.0. If it is

A radiograph is made using film X with an exposure of 10

mA-min. Film density in the area of interest is 1.0. If it is desired

to achieve a density of 2.0 in the area of interest, what exposure

is required? (Log relative exposure = 1.1 for a density of 1.0 and

1.62 for a density of 2.0)

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