A piece of an ancient wooden boat shows an activity of C14 of 3.9 disintegrations per minute per gm of carbon. Estimate the age of the boat, if the half life of C14 is 5.568 years. Assume that the activity of fresh carbon -14 is 15.6 dpm.gm
1
11.136 years
2
8.121 years
3
6.312 years
4
12.631 years