MP Board · Class 12 · Physics · NucleiDuring $\beta^-$ decay:
Step-by-Step Solution
In $\beta^-$ decay, a neutron inside the nucleus converts into a proton, emitting an electron and an antineutrino ($n \to p + e^- + \bar{\nu}$).
Detailed Options Breakdown
Option : A proton converts into a neutron
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Nuclei.
Option 1: A neutron converts into a proton (Correct Answer)
Correct choice. Refer to the step-by-step verified solution guidelines above for details.
Option 2: Mass number increases by 1
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Nuclei.
Option 3: Atomic number decreases by 1
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Nuclei.
💡 Study Guide: This question tests core syllabus concepts from Nuclei. For formulas, key summaries, and mock exam reference guides, read the full Nuclei Revision Notes.