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JEE PHYSICS MCQ: ATOMS

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Understanding +4 | -1
Assertion (A): The positively charged nucleus of an atom has a radius of almost 10−15 m10^{-15} \mathrm{~m}.

Reason (R): In α\alpha - particle scattering experiment, the distance of closest approach for α\alpha-particles is 10−15 m10^{-15} \mathrm{~m}.
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Correct option: A
Both (A) and (R) are true and (R) is the correct explanation of (A)
Option A is correct because the distance of closest approach in the alpha-particle scattering experiment provides an estimate of the nuclear radius.

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