Question
Question: If T is the half life of a radioactive material, then the fraction that would remain after a time \(...
If T is the half life of a radioactive material, then the fraction that would remain after a time 2T is.
A
21
B
43
C
21
D
22−1
Answer
21
Explanation
Solution
Fraction remains after n half lives
N0N=(21)n=(21)t/T
∴ N0N=(21)TT/2=(21)1/2=21.