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Length of a steel rod is 40 cm at 20°c. The coefficient of linear expansion for steel is 12× 10^-6. Then find the length of the steel rod when the temperature is 70°c
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If the change in length is along one dimension (length) over the volume, then it is called linear expansion. Here the reason behind the expansion is the change in temperature Thus, it is implied that the change in temperature will reflect in the rate of expansion. How much material can withstand its original shape and size under the influence of heat radiation is well explained using this concept.
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