Physics · 2014
JEE Main · 11 April 2014, Shift 1 · Q27
A radioactive nuclei with decay constant 0.5/s is being produced at a constant rate of 100 nuclei/s. If at t =0 there were no nuclei, the time when…
A radioactive nuclei with decay constant $\displaystyle 0.5$/s is being produced at a constant rate of $\displaystyle 100$ nuclei/s. If at $\displaystyle \mathrm{t}=0$ there were no nuclei, the time when there are $\displaystyle 50$ nuclei is :
Official answer
(2)
$\displaystyle 2 \ln \left(\frac{4}{3}\right) \mathrm{s}$
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JEE Main 2014 Physics question, with the answer from NTA’s final answer key. Where our answers come from.