JEE Main 2014 — Nuclear Physics Question with Solution
JEE Main 2014 (12 Apr Online)
Question
A piece of bone of an animal from a ruin is found to have activity of 12 disintegrations per minute per gm of its carbon content. The activity of a living animal is 16 disintegrations per minute per gm. How long ago nearly did the animal die? (Given half life of is years)
Choose an option
Show full solutionCorrect option: B
Correct answer
B2391 years
Step-by-step explanation
Given, for
Now,
per year
Then, from,
years
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This is a previous-year question from JEE Main 2014, covering the Nuclear Physics chapter of Physics. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.