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JEE Main 202528 JanuaryMorning Shift
Exam
JEE Main
Year
2025
Date
28 January
Shift
Morning Shift
Subject
Physics
Chapter
Nuclear Physics

JEE Main 2025 · 28 January · Morning Shift · Physics · Nuclear Physics

Choose the correct nuclear process from the below options [p:...

Choose the correct nuclear process from the below options [p: proton, n : neutron, e−\mathrm{e}^{-}: electron, e+\mathrm{e}^{+}: positron, v:v: neutrino, vˉ\bar{v} : antineutrino]

Options

  1. An→p+e++vˉ\mathrm{n} \rightarrow \mathrm{p}+\mathrm{e}^{+}+\bar{v}
  2. Bn→p+e++v\mathrm{n} \rightarrow \mathrm{p}+\mathrm{e}^{+}+\boldsymbol{v}
  3. Cn→p+e−+v\mathrm{n} \rightarrow \mathrm{p}+\mathrm{e}^{-}+\boldsymbol{v}
  4. Dn→p+e−+vˉ\mathrm{n} \rightarrow \mathrm{p}+\mathrm{e}^{-}+\bar{v}

Correct answer

D. n→p+e−+vˉ\mathrm{n} \rightarrow \mathrm{p}+\mathrm{e}^{-}+\bar{v}

Step-by-step solution

For all nuclear processes, charge must be conserved. Also, when a release of an electron ( e−e^{-}) is always accompanied by a release of an antineutrino ( vˉ\bar{v} ) Hence, n→p+e−+v‾n \rightarrow p+\mathrm{e}^{-}+\overline{\mathrm{v}} is the correct answer.
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