The temperature of a wire is doubled. The Young's modulus of elasticity will ?

also double

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become four times

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remain same

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decrease

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Solution

The correct option is C decrease
As $Y = \frac{F L}{A Δ L}$ ,when temperature is doubled, $Δ L$ increases and accordingly $Y$ decreases.

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Similar questions

Q. Assertion :From the relation

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, we can say that, if length of a wire is doubled, its Young's modulus of elasticity will also becomes two times. Reason: Modulus of elasticity is a material property.

In determination of young modulus of elasticity of wire, a force is applied and extension is recorded. Initial length of wire is '1 m'. The curve between extension and stress is depicted then Young's modulus of wire will be K $\times$ $10^{9}$ $\frac{N}{m^{2}}$ , where K is .

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Q. On applying a stress of

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Q. On applying a stress of

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The temperature of a wire is doubled. The Young's modulus of elasticity will ?

The correct option is C decreaseAs Y=FLAΔL,when temperature is doubled, ΔL increases and accordingly Y decreases.

The correct option is C decrease
As $Y = \frac{F L}{A Δ L}$ ,when temperature is doubled, $Δ L$ increases and accordingly $Y$ decreases.