JEE Main · 2024 · 30 Jan 2024 · Shift 1 · Elasticity & SHM

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Young's modules of material of a wire of length ' L ' and cross-sectional area A is Y . If the length of the wire is doubled and cross-sectional area is halved then Young's modules will be :

(A) $\frac{Y}{4}$
(B) $4 Y$
(C)Y✓ Correct
(D)2 Y

Answer: (C)

Solution

Young's modulus is a material property,

Y = stress / strain

, independent of the wire's length or cross-section. Changing

L

and

A

does not change

Y

JEE Main · 2024 · 30 Jan 2024 · Shift 1 · Single correct option

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