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A steel tape 1m.long is correctly caliberated at 27c.The length of a steel rod measured by the tape is found to be 63 cm.on a hot day when temp is 45c .What is the actual length of the rod on that day? What is the actual length of the same steel rod at 27c? [coeff of linear expansion of steel is 1.20x10 -5 c -1.]

A steel tape 1m.long is correctly caliberated at 27c.The length of a steel rod measured by the tape is found to be 63 cm.on a hot day when temp is 45c .What is the actual length of the rod on that day? What is the actual length of the same steel rod at 27c?
[coeff of linear expansion of steel is 1.20x10-5 c-1.]
 

Grade:11

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