A radioactive sample can decay by two different processes. The half-life for the first process is T1 and that for the second process is T2. The effective half-life T of the radioactive sample is
A
T=T1+T2
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
1T=1T1+1T2
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
C
T=T1+T2T1T2
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
T=T1−T2T1T2
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution
The correct option is B1T=1T1+1T2
Radioactive decay rate is directly proportional to number of nucleus present at any time
dNdt=−λN....(i)
where λ is a constant related to half life as λ=ln2T12 where T12 is half life time of radioactive decay