Question

a wire is stretched by a force such that its length becomes doubled. how will the young's modulus of the material be affected

Answer 1

Consider a wire of length l and cross sectional area A stretched by a force F through a distance Δl.

Then expression for Young's Modulus is given as :-

Y= FlAΔl ..........(1)

According to question, Δl = 2l

Then, Young's Modulus (Y)= F2A

Answer 2

Explanation:

• The young's modulus is a mechanical property that measures the stiffness of a solid material.
• It is a constant quantity.
• Every material has a constant Young's modulus.
• If a wire is stretched by a force such that its length becomes doubled, then the young's modulus of the material remains the same.

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Young's modulus

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