A rod of length 20 cm is made of metal It expands by 0 075cm

Last updated: 6/8/2023

A rod of length 20 cm is made of metal It expands by 0 075cm when its temperature is raised from 0 C to 100 C Amother rod of a different metal B having the same length expand by 0 45 cm for the same change in temperature A third rod of the same length is composed of two parts one of metal A and the other of metal B This rod expands by 0 060 cm for the same change in temperature The portion made of metal A has the length 1 20 cm 2 10 cm AIPMT 91 3 15 cm 4 18 cm