Question

Assertion :$\gamma$-radiation emission occurs after $\alpha$ and $\beta$ decay. Reason: Energy levels occur in nucleus.

• A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.
• B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.
• C. Assertion is correct but Reason is incorrect.
• D. Both Assertion and Reason are incorrect.

Answer 1

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.

During $\alpha$ and $\beta$ decay, $\gamma$ radiation always occur. The reason for the decay is that parent atom transforms into a daughter atom with different atomic configuration. Since energy levels occur in nucleus and configuration changes, gamma radiation occurs as a byproduct in accordance with law of conservation of energy.