If the radiation intensity is 1 Gy/h (100 R/h) at a distance of 152.4 – McqOptions

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1.	If the radiation intensity is 1 Gy/h (100 R/h) at a distance of 152.4 cm (5 feet) from a source, what is the intensity at 610 cm (20 feet)?
A.	0.0625 Gy/h (6.25 R/h)
B.	0.25 Gy/h (25 R/h)
C.	16 Gy/h (1600 R/h)
D.	4 Gy/h (400 R/h)
Answer» B. 0.25 Gy/h (25 R/h)

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