Physics · 2020
JEE Main · 5 September 2020, Shift 2 · Q18
A radioactive nucleus decays by two different processes. The half life for the first process is 10 s and that for the second is 100 s. The effective…
A radioactive nucleus decays by two different processes. The half life for the first process is $\displaystyle 10$ s and that for the second is $\displaystyle 100$ s. The effective half life of the nucleus is close to :
Official answer
(4)
$\displaystyle 9$ sec .
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JEE Main 2020 Physics question, with the answer from NTA’s final answer key. Where our answers come from.