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Two rods of lengths $l_{1} and l_{2}$ are made of materials whose coefficients of linear expansion are $α_{1} and α_{2}$ respectively. If the difference between the two lengths is independent of temperature, then

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l1l2=α2α1

l12α2=l22α1

l1l2=α1α2

l1α22=l2α12

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detailed solution

Correct option is A

l1α1-l2α2=0

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Two rods of lengths l1 and l2 are made of materials whose coefficients of linear expansion are α1 and α2 respectively. If the difference between the two lengths is independent of temperature, then

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Ready to Test Your Skills?

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Two rods of lengths $l_{1} and l_{2}$ are made of materials whose coefficients of linear expansion are $α_{1} and α_{2}$ respectively. If the difference between the two lengths is independent of temperature, then