When composite rod is free, then composite length increases to 2.002 m
Channel: Doubtnut
Date: 28/01/2020

When composite rod is free, then composite length increases to 2.002 m for temperature `20^(@)C` to `120^(@)C` when composite rod is fixed between the support there is no change in component length find y and `alpha` of steel, if `y_(c)=1.5xx10^(13)N//m^(2)alpha_(c)=1.6xx10^(-5)//.^(@)C`.