A pieces of bone an animals from a ruin is found to have 14C activity of 12 disintegrations per minute per gm of its carbon content. The14C activity of of a living animal is 16 disintegration per minute per gm How long ago nearly did the animal die? (Given half of life 14Cis t1/2=5760 years)
Correct answer: (b)
The initial activity of c -12 is =A0=16 dpm.
after a time of t years, activity reduces to A = 12 dpm.