Question

A freshly cut tree and a wooden artifact have $30.4$ and $15.2$ counts $g^{-1}$ ${min}^{-1}$ of $C^{14}$ of half life of $5700$ years. The age of the artifact in years would be:

• A. $2850$
• B. $5700$
• C. $570$
• D. $6930$
• E. $11400$

Answer 1

Answer: (B)

$5700$

We find that the ratio of counts b/w a fresh and old sample is $30.4/15.2=2.$

$\therefore$ The tree is at $1/2-life$ so the age is $5700$ years.