InterviewSolution
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InterviewSolution
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For a radioactive material, half-life is `10` minutes. If initially there are `600` number of nuclei, the time taken (in minutes) for the disintegration of `450` nuclei is.A. 30B. 10C. 20D. 15 |
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Answer» Correct Answer - C Number of nuclei remaining =600-450=150 `(N)/(N_(0))=((1)/(2))^(n)` `(150)/(600)=((1)/(2))^((t)/(t_(1//2)))` `((1)/(2))^(2)=((1)/(2))^((t)/(t_(1//2)))` `t=2t_(1//2)=2xx10` `=20` minutes |
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