[Solved] If the radiation intensity is 5.9 Gy/h (590 R/h) at a distance of 30.5 cm (1 foot) from a source, how far is it to the point where the radiation intensity is 0.02 Gy/h (2R/h)?

Q.	If the radiation intensity is 5.9 Gy/h (590 R/h) at a distance of 30.5 cm (1 foot) from a source, how far is it to the point where the radiation intensity is 0.02 Gy/h (2R/h)?
A.	518 cm (17 feet)
B.	16551 cm (543 feet)
C.	8291 cm (272 feet)
D.	17983 cm (590 feet)
Answer» A. 518 cm (17 feet)

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Non Destructive Testing and Evaluation

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