Discussion Forum



1)

The half-life period and the mean life period of a radioactive element are denoted respectively by Th and Tm. Then


A) Th=Tm

B) Th>Tm

C) Th<Tm

D) Th≥Tm

Answer:

Option C

Explanation:

Half-life Th = 0.693λ,Tm=1λ

Clearly, Th<Tm