Post Utme Unn 2021 Physics Question 25

Practice objective / multiple choice question 25 from the 2021 Post Utme Unn Physics examination.

Post Utme Unn 2021 Physics Objective / Multiple Choice
Question 25 POST_UTME_UNN • 2021 • PHYSICS • objective

A radioactive sample decays with a half-life $t_{1/2}$. If the initial number of nuclei $N_0$ is $1000$, what is the number of nuclei $N$ remaining after a time $t = 2t_{1/2}$?

Answer Options

A. N_0 \left\( \frac{1}{2}\right \)^1
Correct Answer B. N_0 \left\( \frac{1}{2}\right \)^2
C. N_0 \left\( \frac{1}{2}\right \)^3
D. N_0 \left\( \frac{1}{2}\right \)^4
Correct Answer
B
Correct Option:
N_0 \left\( \frac{1}{2}\right \)^2

About This Question

This is Post Utme Unn 2021 Physics Question 25. It is one of the objective questions from the 2021 Post Utme Unn Physics examination.

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