Practicing Success

Target Exam

CUET

Subject

Physics

Chapter

Nuclei

Question:

A piece of ancient wood shows an activity of 3.9 disintegrations per second per gram of $C^{14}$. The age of wood, if half life of $C^{14}$ is 5568 years, and activity of fresh $C^{14}$ is 15.6 disintegrations per second per gram, is (take $\log _e 2$ = 0.693).

Options:

9,324 years

13,142 years

19,121 years

11,136 years

Correct Answer:

11,136 years

Explanation:

The correct answer is Option (4) → 11,136 years