The half life of a radioactive nucleus is 50 days. The time interval 
between the time 
when 
of it has decayed and the time 
when 
of it had decayed is
Text Solution
Verified by ExpertsThe correct answer is:
B
According to radioactive decay law
where 
Number of radioactive nuclei at time 
Number ofradioactive nuclei left undecayed at any time 
decay constant
At time 
of the sample had decayed
(i)
At time 
of the sample had decayed,
(ii)
Divide (i) by (ii), we get
days
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