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A steel tape is callibrated at 20^@ C. O...

A steel tape is callibrated at `20^@ C`. On a cold day when the temperature is `-15^@ C`, what will be the percentage error in the tape ?

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The correct Answer is:
`-0.039%`
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A steel tape 1 m long is correctly calibrated for a temperature of 27.0^(@)C . The length of a steel rod measured by this tape is found to be 63.0 cm on a hot day when the temperature is 45^(@)C . Coefficient of linear expansion of steel = 1.20 xx 10^(-5) //K . what is the actual length of the steel rod on that day?

SL ARORA-HEAT-Problem For Self Practice
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