Questions
Half life of a radioactive element is T. Then what fraction of initial number of active nuclei will decay in the time interval t = T to t = 2T?
detailed solution
Correct option is B
If N0 be the initial number of active nuclei of the radio active sample, then N1=N02TT=N02and N2=N022TT=N04∴ Required fraction =N1−N2N0=N02−N04N0=14Talk to our academic expert!
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The half life period of a radioactive element X is same as the mean life time of another radioactive element Y. Initially both of them have the same number of atoms. Then
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