Modern Physics 3 Question 11
11. Which of the following processes represent a $\gamma$-decay?
(a) ${ }^{A} X _Z+\gamma \rightarrow{ }^{A} X _{Z-1}+a+b$
(2002, 2M)
(b) ${ }^{A} X _Z+{ }^{1} n _0 \rightarrow{ }^{A-3} X _{Z-2}+c$
(c) ${ }^{A} X _Z \rightarrow{ }^{A} X _Z+f$
(d) ${ }^{A} X _Z+e _{-1} \rightarrow{ }^{A} X _{A-1}+g$
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Solution:
- During $\gamma$-decay atomic number $(Z)$ and mass number $(A)$ does not change. So, the correct option is (c) because in all other options either $Z, A$ or both is/are changing.
