selestem6058 selestem6058
  • 18-04-2024
  • Mathematics
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The radiation beam has an intensity of 3 mR/hr at a distance of 7 cm from the source. What is the intensity at 3 cm?
A. 1.81 mrad/hr
B. 16.3 mrad/hr
C. 9 mrad/hr
D. 1.5 mrad/hr

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