The temperature of a wire is doubled, the Young's modulus of elasticity
Correct answer: D. Will decrease
- A. Will also double
- B. Will become four times
- C. Will remain the same
- D. Will decrease
Explanation
Young's modulus, a measure of a material's stiffness, generally decreases with an increase in temperature. This is because higher temperatures cause atoms to vibrate more vigorously, weakening the bonds between them and thus reducing the material's ability to withstand deformation. Therefore, when the temperature of a wire is doubled, the Young's modulus of elasticity decreases. Option A is incorrect because Young's modulus does not increase with temperature. Option B is incorrect because the modulus does not quadruple; rather, it typically decreases. Option C is incorrect because it fails to consider the impact of temperature on atomic interactions and the resulting decrease in modulus.
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