A sample of rock from moon contains equal number of atoms of uranium and lead `(t""_(1//2)for U=4.5xx10""^(9)`year). The age of the rock would beA. `4.5xx10""^(9)` yearB. `9xx10""^(9)` yearC. `13.5xx10""^(9)` yearD. `2.25xx10""^(9)` year

A sample of rock from moon contains equal number of atoms of uranium a

1.	A sample of rock from moon contains equal number of atoms of uranium and lead `(t""_(1//2)for U=4.5xx10""^(9)`year). The age of the rock would beA. `4.5xx10""^(9)` yearB. `9xx10""^(9)` yearC. `13.5xx10""^(9)` yearD. `2.25xx10""^(9)` year
Answer» Correct Answer - a `lamdat=2.303log((U""^(238)+pb""^(206))/(U""^(238)))` `lamda=0.693/t""_(1//2),txx0.693/t""_(1//2)=2.303 log2,t=t""_(1//2)` `N=N""_(0)/2""^(n),2""^(n)=N""_(0)/N=15.2/7.6=2,n=1`

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A sample of rock from moon contains equal number of atoms of uranium and lead `(t""_(1//2)for U=4.5xx10""^(9)`year). The age of the rock would beA. `4.5xx10""^(9)` yearB. `9xx10""^(9)` yearC. `13.5xx10""^(9)` yearD. `2.25xx10""^(9)` year

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