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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

A

`9.0 xx 10^9` years

B

`4.5 xx 10^9` years

C

`13.5 xx 10^9` years

D

`2.25 xx 10^9` years

Text Solution

Verified by Experts

The correct Answer is:
B
`N= N_0/(2^n) , `use ` t= (2.303 xx t_(1//2))/(0.693) log (100)/(10) `
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