Post Utme Unilorin 2020 Physics Question 4

Practice objective / multiple choice question 4 from the 2020 Post Utme Unilorin Physics examination.

Post Utme Unilorin 2020 Physics Objective / Multiple Choice
Question 4 POST_UTME_UNILORIN • 2020 • PHYSICS • objective

A radioactive sample decays at a rate given by the equation $N(t) = N_0 e^{-\lambda t}$. If the initial number of nuclei is $10^6$ and the decay cons\tant is $\lambda = 0.1$ s$^{-1}$, what is the number of nuclei remaining after $t = 10$ s?

Answer Options

Correct Answer A. 5.0 \times 10^5
B. 1.0 \times 10^6
C. 2.0 \times 10^6
D. 5.0 \times 10^6
Correct Answer
A
Correct Option:
5.0 \times 10^5

About This Question

This is Post Utme Unilorin 2020 Physics Question 4. It is one of the objective questions from the 2020 Post Utme Unilorin Physics examination.

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