For 40 g amount 40 g half -life ⟶20 s20 g⟶20 s10 g For 160 g amount 160 g⟶10 s80 g⟶10 s40 g40 g⟶10 s20 g⟶10 s10 g So, after 40 sA1 and A2 remains same.
A mixture consists of two radioactive materials A1 and A2 with half lives of 20 s and 10 s respectively. Initially the mixture has 40 g of A1 and 160 g of A2. The amount of the two in the mixture will become equal after
Held on 30 Apr 2012 · Verified 9 Jul 2026.
60 s
80 s
20 s
40 s
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