A and B are two substances undergoing radioactive decay in a container. The half life of A is 15 min and that of B is 5 min. If the initial concentration of B is 4 times that of A they both start deca

Question

A and B are two substances undergoing radioactive decay in a container. The half life of A is 15 min and that of B is 5 min. If the initial concentration of B is 4 times that of A they both start decaying at the same time, how much time will it take for the concentration of both of them to be same? ______________ min.

Prashant Kotian · Accepted Answer

Correct answer: .. A / ) t = 15 min B / ) t = 5 min [B]initial = 4[A]intial [B]final = [B]intial /t 1      [A]final = [A]intial /t 1      [B]final = [A]final t = 15 | JEE(Main) 2023 | DATE : 01-02-2023 (SHIFT-1) | PAPER-1 | OFFICIAL PAPER | CHEMISTRY PAGE # 10

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