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An aluminium rod and iron rod show 1.5 m...

An aluminium rod and iron rod show 1.5 m difference in their lengths when heated at all temperature. What are their lengths at` 0^@ C` if coefficient of linear expansion for aluminium is `24.5 xx 10^(-6) //""^@C` and for iron is `11.9 xx 10^(-6) //""^@ C `

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`1.417 m, 2.917 m`
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