The activity of an old piece of wood is just one fourth of a fresh pie – InterviewSolution

1.	The activity of an old piece of wood is just one fourth of a fresh piece of wood. If half life period of ""^(14)C is about 6000 years, the age of old piece of wood is:
Answer» 6000 years 3000 years 9000 years 12000 years Answer :D

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