The half-life period of a radioactive element 
is same as the mean-life time of another radioactive element Y. Initially both of them have the same number of atoms. Then
A
and 
have the same decay rate initially
B
and 
decay at the same rate always
C
will decay at a faster rate than 
D
will decay at a faster rate than 
.
Text Solution
Verified by ExpertsThe correct answer is:
C
or 
or 
Rate of decay 
Initially, both samples have the same number of atoms(N), but 
, so Y will decay at a faster rate than X.
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