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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Q. 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)

(A) 41.67 mA-min

(B) 10 mA-min

(C) 12.6 mA-min

(D) 33.1 mA-min

Correct Answer - Option(D)
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Filed under category Non Destructive Testing and Evaluation

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