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:

  1. 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.


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