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A Satisfactory Radiograph Is Made Using 20 MAs at 40

Question 13

Multiple Choice

A satisfactory radiograph is made using 20 mAs at 40 inches SID. How much mAs is needed to produce a similar radiograph at 60 inches SID?

A) 30 mAs
B) 35 mAs
C) 45 mAs
D) 55 mAs

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