A radioactive nucleus can decay by two different processes. The half-life for the first process is 
and that for the second process is 
then what will be the effective half-life t of the nucleus is
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
C
Decay constant for the processes are
The probability that an active nucleus decays by the first process in small time dt is 
.
Similarly for second decay. The probability that it decays either by first process or second process is 
.
If effective decay constant is 
this probability is also equal to 
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