A copper rod, 5m long when heated through 20c, expands by 1mm. If a second copper rod, 2.5m long is heated through 5c, by how much will it expand? by Sunday | Jan 4 | Physics WAEC | 0 comments A. 4mm B. 2mm C. 0.25mm D. 0.12mm Correct Answer: Option C C. 0.25mm Users Also Read These:In the diagram above, AB represents a uniform rod of…An aluminium rod of length 1.8m at 100oC is heated…A metal rod of length 50cm is heated from 40oC to…Calculate the mass of the copper deposited during…A finely divided from of a metal burns more readily…