1.

A radioactive substance decompose at a rate proportional to the quantity of thesubstance present. Ifintiallythe substance present is 100 mg and the half life of substance is 1590 years, then the substance reduces to 30 mg in log((10)/(3))=1.2040,log2=0.6932

Answer»

2761.62 years
2761.63 years
2767.62 years
2767.63 years

Answer :B


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