Question
a carbon sample from the frame of a picture gives 7 counts of C-14 per minute per gram of carbon . if freshly cut wood gives 15.3 counts of C-14 per minute. calculate the age of frame (t½ of C-14 = 5570 yrs)
(a) 6286 yrs
(b) 5527 yrs
(c) 5570 yrs
(d) 4570 yrs
Joshi sir comment
use t = 2.303/k * log(15.3/7)
k = 0.6932/t1/2