The half-life for radioactive decay of `.^14C` is 5730 years. An archaeological artifact contented wood that has only 80% of the `.^14C` found in living tree. Estimate the age of the sample.

The half life period for radioactive decay of ""^(14)C is 5670 years. An archaeological artifact contained wood had only 80 % the ""^(14)C found in a living tree. Estimate the age of the sample.

The half life of _6C^(14) is 5,700 years .what does it mean?

The half-life of ._(6)^(14)C is 5730 year. What fraction of its original C^(14) would left after 22920 year of storage?

A radioactive isotope X with half-life of 693xx10^(9) years decay to Y which is stable. A sample of rock from of the moon was found to contain both the elements X Y in the mole ratio 1:7 . What is the age of the rock ? a) 2.079xx10^(12) years b) 1.94xx10^(10) years c) 1.33xx10^(9) years d) 10^(10) years

A piece of wood from an archaeological source has a "^14C activity which ls 60% of the activity found in fresh wood today. Calculate the age of the archaeological sample (the half life period of C-14 is 5770 years).

The half-life of a radioactive element is 100 minutes . The time interval between the stage to 50% and 87.5% decay will be: a) 100 min b) 50 min c) 200 min d) 25 min

The normal activity of living carbon-containing matter is found to be about 15 decays per minute for every gram of carbon. This activity arises from the small proportion of radioactive "_6^14C present with the stable carbon isotope "_6^12C . When the organism is dead, its interaction with the atmosphere (which maintains the above equilibrium activity) ceases and its activity begins to drop. From the known half-life (5730 years) of "_6^14C , and the measured activity, the age of the specimen can be approximately estimated. This is the principle of "_6^14C dating used in archaeology. Suppose a specimen from Mohenjodaro gives an activity of 9 decays per minute per gram of carbon. Estimate the approximate age of the Indus-Valley civilisation.

A piece of wood from the ruins of 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 distintegrations per minute per gram. How long ago did the tree, from which the wooden sample came, die? Given half-life of "^14C is 5760 years.