Question

An archaeologist analyses the wood in a phehistoric structure and finds that `C^14` (Half-life `= 5700` years) to `C^12` only one-fourth of that found in the cells buried plants. The age of the wood is about
A. 5700 years
B. 2850 years
C. 11,400 years
D. 22,800 years

Answer 1

Correct Answer - C
( c) `(C_14)/(C_12) = (1)/(4) = ((1)/(2))^(t//5700) rArr (t)/(5700) = 2 rArr t = 11400 years`.