An iron rod of length 50m and at a temperature of 60°C is heated to 70°C. Calculate its new length. (Linear expansivity of iron = 1.2 x 10-5K-1) by Sunday | Aug 27 | Physics WAEC | 0 comments A. 50.006m B. 50.060m C. 51.600m D. 51.200m Correct Answer: Option A – 50.006m Users Also Read These:A brass rod is 2 m long at a certain temperature.…The length of an iron bar is 100cm at 20°C. At what…An aluminium rod of length 1.8m at 100oC is heated…The diameter of a brass ring at 30 °C is 50.0 cm. To…A metal rod of length 100cm is heated through 100°C,…