A copper wire is stretched at a temperature of `150^(@)C` between two strong fixed walls
Channel: Doubtnut
Date: 12/04/2020

A copper wire is stretched at a temperature of `150^(@)C` between two strong fixed walls. At what temperature, will the wire break when it cools ? Assume Hooke's law is applicable till the wire breaks.   `alpha_(Cu) = 1.6 xx 10^(-5)`/degree   `Y_("copper") = 11.8 xx 10^(10) N//m^(2)`   Ultimate strength of copper `= 2.45 xx 10^(8) N//m^(2)`