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Law of Radioactivity

half-life of ...

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half-life of 1 month has thea331. A radioactive sample withlabel: Activity=2 microcurie on 1-3-2013. What was its(AIPMT)activity before 2 months?(b) 4 microcuriefa) 8 microcurie(d) 0.5 microcurie(c) 1 microcurie

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