Question

The radioactively due to `C^(14)` isotope (half-life 6000 years) of a sample of wood from an ancient tomb was found to be nearly half that of fresh wood, the tomb is therefore about
A. 3000 years old
B. 6000 years old
C. 9000 years old
D. 1200 years old

Answer 1

Correct Answer - B
`N = N_(0) xx ((1)/(2))^(n)`
`(1)/(2) = 1 xx ((1)/(2))^(n) , n = 1`
`t = n xxt_(1//2) = 1 xx 6000 = 6000` yrs