A steel meter scale is to be ruled so that millimeter intervals are accurate within about 5 10⁻⁵ ~m at a certain temperature. The maximum temperature variation allowable during the ruling is (Coefficient of linear expansion of steel =10 10⁻

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A steel meter scale is to be ruled so that millimeter intervals are accurate within about 5 10⁻⁵ ~m at a certain temperature. The maximum temperature variation allowable during the ruling is (Coefficient of linear expansion of steel =10 10⁻⁶ ~K ⁻¹ )

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Correct answer: B. 5^ C

Change in length L=5 10⁻⁵ ~m Initial length L=1 ~m =10 10⁻⁶ / ^ C Change in temperature aligned t & = L L = 5 10⁻⁵ 10 10⁻⁶ 1 & =5^ C aligned

A steel meter scale is to be ruled so that millimeter intervals are accurate within about 5 10⁻⁵ ~m at a certain temperature. The maximum temperature variation allowable during the ruling is (Coefficient of linear expansion of steel =10 10⁻⁶ ~K ⁻¹ )

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