Practicing Success
A piece of ancient wood shows an activity of 3.9 disintegrations per second per gram of $C^{14}$. The age of wood, if half life of $C^{14}$ is 5568 years, and activity of fresh $C^{14}$ is 15.6 disintegrations per second per gram, is (take $\log _e 2$ = 0.693). |
9,324 years 13,142 years 19,121 years 11,136 years |
11,136 years |
The correct answer is Option (4) → 11,136 years |