Assertion :- In \( \gamma \)-decay, there is no change in mass \( \...

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Assertion :- In \( \gamma \)-decay, there is no change in mass
\( \mathrm{P} \) number and atomic number of nucleus, only

W energy level decreases.
- Reason :- The nucleus also have discrete energy
- level like an atom.
(1) \( \mathrm{A} \)
(2) B
(3) \( \mathrm{C} \)
(4) D
- (A) Both assertion and reason are correct statements, and reason is the correct explanation of the assertion.
_ (B) Both assertion and reason are correct statements, but reason is not the correct explanation of the assertion.
(C) Assertion is correct, but reason is wrong statement.
(D) Assertion is wrong, but reason is correct statement.
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