A) \[\frac{XY}{\ell n(2)}\]
B) \[XY\]
C) \[XY\ln (2)\]
D) \[\frac{X}{Y}\]
Correct Answer: A
Solution :
The number of radioactive nuclei becomes constant when the rate of production is equal to the rate of decay. \[\Rightarrow \]\[X=\lambda N=\frac{\ell n2}{Y}N\]\[\therefore \,N=\frac{XY}{\ell n2}\] Hence, the correction option is [a].
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