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Question

A radioactive isotope is being produced at a constant rate x. Half life of the radioactive substance is 'y'. After sometime, the number of radioactive nuclei becomes constant the value of this constant is ________

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Solution

At the stage of radioactive equilibrium, rate of formation of nuclei = rate of decay of nuclei
x=λN
N=xλ=x(ln2)/y=xyln2

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