physics

posted by sanjeet

a steel rod when measured with a zinc scale both being at 25 degree Celsius appear to be one meter long.if the zinc scale is correct at 0 degree Celsius, what is the actual length of the rod at 0 degree Celsius? [linear expansivity of steel=12*10^-6 /degree C
linear expansivity of zinc=26*10^-6/degree Celsius]

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