Class 12 Physics Modern Physics Nuclei



A piece of wood from the ruins of an ancient building was found to have a activity of disintegration per minute per gram of its carbon content. The activity of the living wood is disintegration per minute per gram. How long ago did the tree, from which the wooden sample came, di? Given half-life of is years.
Solution: Rate of disintegration in old wood sample of C-14 radioactive atms is atoms per min gm. Initially rate of distintegration of when the tree was live atoms per min per gm.
of C-14 nuclei years
According to radioactive decay law







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