A steel meter scale is to be ruled so th...

A steel meter scale is to be ruled so that millimetre intervals are accurate within about `5xx10^-5` m at a certain temperature. The maximum temperture variation allowable during the ruling is (coefficient of linear expansion of steel =`10xx10^-6K^-1`

`2^(@)C`

`5^(@)C`

`7^(@)C`

`10^(@)C`

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AAKASH SERIES-THERMAL PROPERTIES OF MATTER-EXERCISE-3

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