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Coefficient of linear expansion of brass and steel rods are $α_{1}$ and $α_{2}$ . Lengths of brass and steel rods are $l_{1}$ and $l_{2}$ respectively. If $(l_{2} - l_{1})$ is maintained same at all tempera – tures, which one of the following relations holds good ?

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α1l2=α2l1

α1l22=α2l12

α12l1 =α22l2

α1l1=α2l2

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Correct option is D

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Coefficient of linear expansion of brass and steel rods are α1 and α2. Lengths of brass and steel rods are l1 and l2 respectively. If l2−l1 is maintained same at all tempera – tures, which one of the following relations holds good ?

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Ready to Test Your Skills?

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Coefficient of linear expansion of brass and steel rods are $α_{1}$ and $α_{2}$ . Lengths of brass and steel rods are $l_{1}$ and $l_{2}$ respectively. If $(l_{2} - l_{1})$ is maintained same at all tempera – tures, which one of the following relations holds good ?