AIIMS 2017 Physics Rutherford Scattering Assertion Reason Question
Assertion: The positive charged nucleus of an atom has a radius of 10⁻¹⁵ m. Reason: In α-particle scattering experiment, the distance of closest approach for α particle is 10⁻¹⁵ m.
If both assertion and reason are true and reason is correct explanation of assertion.
If both assertion and reason are true and reason is not correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false.
Correct Answer
Detailed Explanation
Option A is correct because both the assertion and the reason are true: the radius of a positively charged nucleus is approximately 10⁻¹⁵ m, and this value corresponds to the distance of closest approach in α-particle scattering experiments, where α particles experience strong nuclear forces at this scale. Other options are incorrect because option B suggests that the reason does not explain the assertion, which is not the case; option C claims the reason is false, which is incorrect as it is true; and option D states both are false, which contradicts the established scientific facts regarding atomic structure and nuclear interactions. Understanding these concepts is crucial for grasping the fundamental principles of nuclear physics and atomic interactions.
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