InterviewSolution
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InterviewSolution
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The half-lives of radioactive sample are `30` years and `60` years for two decay processes. If the sample decays by both the processes simultaneously. The time after which, only one-fourth of the sample will remain isA. `10` yearsB. `20` yearC. `40` yearD. `60` year |
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Answer» Correct Answer - C `lambda=lambda_(a)+lambda_(2)or (1)/(t)-(1)/(t_(1))+(1)/(t_(2))`, where t is `T_(1//2)` `T_(1//2)=20` years |
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