Questions
The half-life of is 5 days. What time is taken by part of the sample of decay?
a
3.4 days
b
10 days
c
15 days
d
20 days
detailed solution
Correct option is C
By using N=N012t/T; Where N=1-78N0=18N0 So 18N0=N012t/T⇒123=12t/5 ⇒t=15 daysTalk 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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