Question

A meter scale is made of iron and is calibrated at 15 degree celsius. Calculate the length of rod at 40 degree celsius the coefficient of Linear expansion of iron is 1.2×10^-5 degree celsius

Answer 1

Answer:

Let the length of tube and scale at 0o C be l. Then,Change in measured tube length Δ l = Thermal expansion of brass - Thermal expansion of steel Δ l