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 rectangular piece of iron measuring 4 cm by 3 cm…The length of an iron bar is 100cm at 20°C. At what…A metal sheet of area 100cm² was heated through…A brass rod is 2 m long at a certain temperature.…A metal rod of length 50cm is heated from 40oC to…