Post Utme Uniosun 2025 Physics Question 28

Practice objective / multiple choice question 28 from the 2025 Post Utme Uniosun Physics examination.

Post Utme Uniosun 2025 Physics Objective / Multiple Choice

Question 28 POST_UTME_UNIOSUN • 2025 • PHYSICS • objective

A radioactive sample has a half-life of $t_{1/2}$. If the initial activity is $A_0$ and the time elapsed is $t$, what is the activity $A$ of the sample?

Correct Answer A. The activity $A$ is equal to the initial activity $A_0$ times the ratio $t/t_{1/2}$.

B. The activity $A$ is equal to the initial activity $A_0$ divided by the ratio $t/t_{1/2}$.

C. The activity $A$ is equal to the initial activity $A_0$ minus the ratio $t/t_{1/2}$.

D. The activity $A$ is equal to the initial activity $A_0$ plus the ratio $t/t_{1/2}$.

Correct Answer

Correct Option:

The activity $A$ is equal to the initial activity $A_0$ times the ratio $t/t_{1/2}$.

This is Post Utme Uniosun 2025 Physics Question 28. It is one of the objective questions from the 2025 Post Utme Uniosun Physics examination.

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