An aluminium measuring rod which is correct at 5 C measures

Last updated: 6/7/2023

An aluminium measuring rod which is correct at 5 C measures the length of a line as 80 cm at 45 C If thermal coefficient of linear expansion of aluminium is 2 50 x 10 5 C the correct length of the line is A 80 08 cm B 79 92 cm C 81 12 cm D 79 62 cm