Post Utme Uniosun 2025 Physics Question 13

Practice objective / multiple choice question 13 from the 2025 Post Utme Uniosun Physics examination.

Post Utme Uniosun 2025 Physics Objective / Multiple Choice

Question 13 POST_UTME_UNIOSUN • 2025 • PHYSICS • objective

A radioactive sample of $^{238}U$ has an initial activity of $A_0$. After $t$ years, the activity of the sample is $A$. What is the decay cons\tant of the sample?

Correct Answer A. \frac{1}{t} \ln\left$ \frac{A_0}{A} \right $

B. \frac{1}{t} \ln\left$ \frac{A}{A_0} \right $

C. \frac{A_0}{A} \ln\left$ \frac{1}{t} \right $

D. \frac{A}{A_0} \ln\left$ \frac{1}{t} \right $

Correct Answer

Correct Option:

\frac{1}{t} \ln\left$ \frac{A_0}{A} \right $

This is Post Utme Uniosun 2025 Physics Question 13. It is one of the objective questions from the 2025 Post Utme Uniosun Physics examination.

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