Two radioactive substances X and Y originally have N1 and N2 nuclei, r – InterviewSolution

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1.	Two radioactive substances X and Y originally have N1 and N2 nuclei, respectively. The half-life of X is half of the half-life of Y. After three half-lives of Y, numbers of nuclei of both are equal, the ratio N1N2 will be equal to :
Answer» Two radioactive substances $X$ and $Y$ originally have $N_{1}$ and $N_{2}$ nuclei, respectively. The half-life of $X$ is half of the half-life of $Y$ . After three half-lives of $Y$ , numbers of nuclei of both are equal, the ratio $\frac{N_{1}}{N_{2}}$ will be equal to :

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