SOLVED:Activity A (disintegration per unit time) vs time tis plotted on a graph paper for 3 radioactive samples having initial masses equal. The plots are 3 straight lines concurrent at (t0, A0) . At 2 t0 the ratio ℓn (A0)/(A1)=0.2 for the least radio-active element (A0, A1. are activities at time t0 and 2 t0 respectively). At t=2 t0 their activities are in the ratio 3: 2: 1 then The half life of the most radio active element is (a) 0.54 t0 (b) 0.63 t0 (c) 0.81 t0 (d) 1.1 t0
SOLVED:Activity A (disintegration per unit time) vs time tis plotted o…
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