M x and M y denote the atomic masses of the parent and the daughter atom respectively in…
Physics · Class 12 · CBSE — Nuclei
Mx and My denote the atomic masses of the parent and the daughter atom respectively in a radioactive decay. The Q-value for a β–decay is Q1 and that for a β+ decay is Q2. If me denotes the mass of an electron, then which of the following statements is correct?
- Q1 = (Mx – My)c2 and Q2 = (Mx – My – 2me)c2
- Q1 = (Mx – My)c2 and Q2 = (Mx – My)c2
- Q1 = (Mx – My – 2me) c2 and Q2 = (Mx – My + 2me)c2
- Q1 = (Mx – My + 2me)c2 and Q2 = (Mx – My + 2me)c2
Answer
(A) Q 1 = ( M x – M y ) c 2 and Q 2 = ( M x – M y – 2 m e ) c 2
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