JEE Main 2014 — Nuclear Physics Question with Solution
JEE Main 2014 (11 Apr Online)
Question
A radioactive nuclei with decay constant is being produced at a constant rate of 100 nuclei/s. If at there were no nuclei, the time when there are 50 nuclei is:
Choose an option
Show full solutionCorrect option: B
Correct answer
B
Step-by-step explanation
Let be the number of nuclei at any time then,
Solving we get,
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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.