The activity of a freshly prepared radioactive sample is `10^(10)`
Channel: Doubtnut
Date: 2020-04-12

The activity of a freshly prepared radioactive sample is `10^(10)` disintergrations per second, whose mean life is `10^(9)s`. The mass of an atom of this radioisotope is `10^(-25) kg`. The mass ( in `mg`) of the radioactive samples is