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The ratio activity of an element becomes 1/64 th of its original value in 60 sec. Then the half-life period is
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Correct option is B
A=A012tT1/2⇒164=1260T1/2 ⇒126=1260T1/2⇒T1/2=10 secSimilar Questions
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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