AIIMS 2019 Physics Radioactive Decay MCQ Question
Assertion: Radioactive nuclei emit β⁻¹ particles.
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false.
Correct Answer
Detailed Explanation
The assertion is true because radioactive nuclei do emit β⁻ particles, which are electrons released during beta decay. However, the reason is false as it does not provide a specific explanation for why this emission occurs; beta decay is a process that occurs when a neutron in the nucleus transforms into a proton, emitting a β⁻ particle and an antineutrino. Option A is incorrect because the reason is not true, and option B is incorrect because, although the assertion is true, the reason does not explain it. Option D is also incorrect since the assertion is indeed true.
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