Nuclear Physics And Radioactivity Question 283
Question: An archaeologist analyses the wood in a prehistoric structure and finds that $ C^{14} $ (Half-life = 5700 years) to $ C^{12} $ is only one- fourth of that found in the cells buried plants. The age of the wood is about [NCERT 1982]
Options:
A) 5700 years
B) 2850 years
C) 11,400 years
D) 22,800 years
Show Answer
Answer:
Correct Answer: C
Solution:
$ \frac{C_{14}}{C_{12}}=\frac{1}{4}={{( \frac{1}{2} )}^{t/5700}} $
$ \Rightarrow ,\frac{t}{5700}=2\Rightarrow t=11400\ years $
BETA
