Q 11-08-021JEE MainJEE Main 2026 (5 Apr, Shift 1)Easy
The Young's modulus of steel wire of radius $r$ and length $L$ is $Y$. If the radius $r$ and length $L$ of the wire are doubled then the value of $Y$
Answer: (C) remains unchanged
Concept. Young's modulus $Y=\dfrac{\text{stress}}{\text{strain}}$ is a property of the material, like density. Changing the size or shape of a wire changes how much it stretches, but not $Y$.
Answer. $Y$ remains unchanged (Option C). Only temperature and the material change $Y$.
Solution by Sreeraj P, M.Sc Physics
