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 iron rod of length 50m and at a temperature of…A piece of copper of mass 30g loses 60J of heat…A rod of initial length 2m at a temperature of 25°C…What is the percentage by mass of copper in copper…