Post Utme Ui 2019 Physics Question 30

Practice objective / multiple choice question 30 from the 2019 Post Utme Ui Physics examination.

Post Utme Ui 2019 Physics Objective / Multiple Choice
Question 30 POST_UTME_UI • 2019 • PHYSICS • objective

A radioactive sample has a half-life of $10\,\text{years}$. If the initial activity is $100\,\text{Bq}$, what is the activity after $20\,\text{years}$?

Answer Options

Correct Answer A. 100\cdot \left\( \frac{1}{2}\right \)^2
B. 100\cdot \left\( \frac{1}{2}\right \)^3
C. 100\cdot \left\( \frac{1}{2}\right \)^4
D. 100\cdot \left\( \frac{1}{2}\right \)^5
Correct Answer
A
Correct Option:
100\cdot \left\( \frac{1}{2}\right \)^2

About This Question

This is Post Utme Ui 2019 Physics Question 30. It is one of the objective questions from the 2019 Post Utme Ui Physics examination.

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