AlIMS 2016 36. Initial number of nuclei of a radioactive substance is 5 x1016 and half life is 10 yrs. Find number of nuclei decayed in 5 yrs. (1) 2 x 1016 (2) 1.5 x 1016 (3)3.5 x 1016 (4) 2.5 x 1016 ..4 י
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