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A radio nuclide sample has N_(0) nuclei at t=0. Its number of undecayed nuclei get reduced to N_(0)/e at t=tau. What does the term ‘tau’ stand for ? Write in terms of 'tau', the time interval T in which half of the original number of nuclei of this radio nuclide would have got decayed. |
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Answer» SOLUTION :The time ‘`tau`’ in which number of undecayed nuclei get reduced to `N_(0)/e` is called the mean LIFE or average life period. The time interval T (or more appropriately `T_(1/2)`) in which half of the ORIGINAL number of nuclei would have got DECAYED is `T(orT_(1/2)=0.693/(lambda)=0.693lambda)` |
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