Q. The decay constant $\lambda$ of the radioactive sample is the probability of decay of an atom in unit time, then
A) $\lambda$ decreases as atoms become older
B) $\lambda$ increases as the age of atoms increases
C) $\lambda$ is independent of the age
D) Behavior of $\lambda$ with time depends on the nature of the activity
Explanation
The correct answer is Option C: $\lambda$ is independent of the age.
A detailed explanation for this question is being prepared.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.