Imagine a radioactive source in the middle of a room. A detector is stationed 1 meter...
Imagine a radioactive source in the middle of a room. A detector is stationed 1 meter away from it, currently reading 10 R. You walk in holding a second detector. How close can you get to the source (in meters) before your detector reads 1 R?
Homework Answers
we know variation of radioactivity occurs with distance by inverse square law, I proportional to (1/r^2).
therefore, I = K/r^2
I = 10R for r= 1 m, K = Ir^2 = 10R*1
therefore now, I = 1R, therefore r = 
=
=
=3.1623 m
away from source.
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