Questions
The half-life of a sample of a radioactive substance is 1 hour.If atoms are present at t = 0, then the number of atoms decayed in the duration t = 2 hour to t = 4 hour will be
detailed solution
Correct option is B
N=N012tT1/2No. of atoms at t=2hr,N1=8 x 10101221=2 x 1010No. of atoms at t=4hr, N2=8 x 10101241=12 x 1010∴No. of atoms decayed in given duration =2-12 x 1010=1.5 x 1010Talk 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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