At a distance of one metre, exposure to a particular radionuclide is found to result in an absorbed dose of 12 mGy. If the time of exposure remains constant what will the absorbed dose be at a distance of two metres?
belongs to book: Examination Questions and Answers in Basic Anatomy and Physiology|Martin Caon|| Chapter number:17.2| Question number:61
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Medicine
A: If the distance doubles, the dose would be expected to decrease according to the inverse square of distance: (½)2 = ¼. One quarter of 12 is 3.
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