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With rise in temperature, the Young's modulus of elasticity 

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With rise in temperature, the Young's modulus of elasticity 

(1) changes erratically 

(2) decreases 

(3) increases 

(4) remains unchanged

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1 Answer

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Best answer

(2) decreases 

\(y = \frac {F/A}{\triangle l/l}= \frac {F/A}{\alpha \Delta T}\) as \(\Delta T \uparrow , y \downarrow\)

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