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A sample of rock from moon contains equa...

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 be a)`4.5xx10""^(9)` year b)`9xx10""^(9)` year c)`13.5xx10""^(9)` year d)`2.25xx10""^(9)` year

Text Solution

Verified by Experts

`t = (2.303)/(K) "log" [1 + (Pb^(206))/(U^(238))]`
`implies (2.303 xx 4.5 xx 10^(9))/(0.693) "log" [1 + ((1)/(206))/((1)/(238))]`
`:.t = 13.5 xx 10^(9)` years
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