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)?

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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)

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✅ Correct Answer: (A) 518 cm (17 feet)

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