<p>One end of a metal wire is fixed to a ceiling and a load of&nbsp; 2 kg hangs from the other end. A similar wire is attached to the bottom of the load and another load of&nbsp; 1 kghangs from this lower wire. Then the ratio of longitudinal strain of upper wire to that of the lower wire will be ________.</p>

<p>[Area of cross section of wire =&nbsp;<span class="equation">\(=0.005cm^2, Y = 2\times10^{11}Nm^{-2}and g = 10ms^{-2}\)</span>​​​​​​​</p>