In half life of a radio isotope is ${\rm{2}}\,\,{\rm{seconds}}$ and number of atoms are only ${\rm{4}}$, then after one half life remaining (without decay) atoms are probably

JEE PHYSICS MCQ: NUCLEI

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Application +4 | -1

In half life of a radio isotope is

\mathrm{2}\,\,\mathrm{seconds}

and number of atoms are only

\mathrm{4}

, then after one half life remaining (without decay) atoms are probably

View answer and explanation

Correct option: B

\mathrm{2}

Option B (2) is correct because after one half-life, half of the radioactive atoms will have decayed, leaving half of the original number.