Two radioactive materials `X_(1)` and `X_(2)` have decay constants `10 lamda` and `lamda`
Channel: Doubtnut
Date: 2020-01-26

Two radioactive materials `X_(1)` and `X_(2)` have decay constants `10 lamda` and `lamda` respectively. If initially they have the same number of nuclei, if the ratio of the number of nuclei of `X_(1)` to that of `X_(2)` will be `1//e` after a time `n/(9lamda)`. Find the value of `n`?