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NEET UG PHYSICS MCQ: MECHANICAL PROPERTIES OF SOLIDS

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A force FF is needed to break a copper wire having radius RR. The force needed to break a copper wire of radius 2R2R will be
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Correct option: C
4 F4\,F
Option C (4 F4\,F) is correct because the force needed to break a wire is proportional to the cross-sectional area, which is proportional to the square of the radius.

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