Questions
A sample of radioactive element has a mass of 10gm at an instant t=0. The appropriate mass of this element in the sample after two mean lives is
detailed solution
Correct option is D
Mean life Tm=1λWe know, N=N0e-λt=10 x e-λ2 x 1λ=10e2=10(2.7)2gm2=1.35 gmTalk to our academic expert!
Similar 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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