Post Utme Noun 2018 Physics Question 32

Practice objective / multiple choice question 32 from the 2018 Post Utme Noun Physics examination.

Post Utme Noun 2018 Physics Objective / Multiple Choice

Question 32 POST_UTME_NOUN • 2018 • PHYSICS • objective

A radioactive sample decays at a rate given by the equation $N(t)=N_0e^{-\lambda t}$, where $N(t)$ is the number of nuclei remaining at time $t$, $N_0$ is the initial number of nuclei, and $\lambda$ is the decay cons\tant. If the half-life of the sample is $T_{1/2}=10$ years, what is the value of $\lambda$?

Correct Answer A. \frac{\ln 2}{10}

B. \frac{10}{\ln 2}

C. \frac{\ln 2}{5}

D. \frac{5}{\ln 2}

Correct Answer

Correct Option:

\frac{\ln 2}{10}

This is Post Utme Noun 2018 Physics Question 32. It is one of the objective questions from the 2018 Post Utme Noun Physics examination.

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