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Sahay Sir > Question Answers > NCERT Exemplar Class 12 > Physics > Chapter 13 - Nuclei > A piece of wood form the ruins of an nuclei an ancient building was found to have a .14C activity of 12 disintegrations per minute per gram of its carbon content. The .14C activity of the living wood is 16 disintegrations / minute / gram. How long ago did the trees, form which the wooden sample came, die? Given half-life of .14C is 5760 years.

A piece of wood form the ruins of an nuclei an ancient building was found to have a .14C activity of 12 disintegrations per minute per gram of its carbon content. The .14C activity of the living wood is 16 disintegrations / minute / gram. How long ago did the trees, form which the wooden sample came, die? Given half-life of .14C is 5760 years.

Draw a graph showing the variation of decay rate with number of active nuclei.