Question

The fossil bone has a ¹⁴C :¹²C ratio, which is (1/16) of that in a living animal bone. If the half-life time of ¹⁴C is 5730 years, then the age of the fossil bone is-

• A. 11460 years
• B. 17190 years
• C. 22920 years
• D. 45840 years

Answer 1

Answer: (C)

22920 years

Answer 2

N = ̃ $\frac { 1 } { 16 }$ = ̃ n = 4

$\frac { \mathrm { t } } { \mathrm { T } }$= 4 ̃ t = 4 × 5730 years = 22920 years