Mechanical Properties of Solids

JEE Main level, single correct, medium

12 of 118

Question 12 of 118

The Young's modulus of steel wire of radius rr and length LL is YY. If the radius rr and length LL of the wire are doubled then the value of YY

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Answer: (C) remains unchanged

Young's modulus YY is an intrinsic property of the material of the wire.

It depends only on the nature of the material and its temperature, and is independent of the dimensions of the wire such as length LL and radius rr.

Therefore, when the radius and length of the steel wire are doubled, its Young's modulus remains unchanged.

Answer: remains unchanged

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