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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > A and B are two radioactive substances whose half lives are 1 and 2 years respectively. Intiallly 10 gm of A and 1 gm of B is taken. The time (approximate ) after which they will have the same quantity remaining is

A and B are two radioactive substances whose half lives are 1 and 2 years respectively. Intiallly 10 gm of A and 1 gm of B is taken. The time (approximate ) after which they will have the same quantity remaining is

A radioactive material decays by simultaneous emission of two particles with respective half lives 1620 and 810 years. The times in years after which one - four of the material remains is