Target Exam

CUET

Subject

Physics

Chapter

Nuclei

Question:

Which of the following equation is not correct for β-decay?

Options:

$n→ p+e^-+\overline v$

$p→n+e^-+v$

$p→n+e^++v$

${}_{11}^{22}Na→ {}_{11}^{22}Ne+e^++v$

Correct Answer:

$p→n+e^-+v$

Explanation:

The correct answer is Option (2) → $p→n+e^-+v$

In a beta decay, a neutron with an atomic nucleus transform into a proton, emitting an electron $(e^-)$ and an antineutrino $(\overline{v_e})$ in process.

$n→p^++e^-+\overline{v_e}$