CUET · PHYSICS · PYQ PAPER 2023
Which of the following equation is not correct for \( \beta \)-decay?
- A \( n \rightarrow p + e^- + \bar{\nu} \)
- B \( p \rightarrow n + e^- + \nu \)
- C \( p \rightarrow n + e^+ + \nu \)
- D \( ^{22}_{11}Na \rightarrow ^{22}_{10}Ne + e^+ + \nu \)
Answer & Solution
Correct Answer
(B) \( p \rightarrow n + e^- + \nu \)
Step-by-step Solution
Detailed explanation
Equation B is incorrect because it violates the law of conservation of charge. On the left side, the proton has a charge of +1 , but on the right side, the neutron ( 0 ) and electron ( -1 ) result in a total charge of -1 . Additionally, it incorrectly pairs an electron (…
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