Nuclear Physics and RadioactivityHard
Question
The half life of a radioactive nucleus is 50 days. The time interval (t2 - t2) between the time t2 when 
of it has decayed and the time t1 when 
of it had decayed is:
of it has decayed and the time t1 when of it had decayed is:Options
A.15 days
B.30 days
C.50 days
D.60 days
Solution
No = Noe-λt1 ......(i)
No = Noe-λt2 ......(ii)eqution (i) and (ii) 2 = e-λt1 + λt2
2 = eλ(t2 - λt1)
log 2 =λ (t2 - t1)
= t2 - t1 = t1/2 = 50 days.Create a free account to view solution
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