<p>A rod CD of thermal resistance 10.0 <span class="equation">\(KW^{-1} \)</span>is joined at the middle of an identical rod AB as shown in figure. The end A, B and D are maintained at <span class="equation">\(200^0C, 100^0C\)</span> and <span class="equation">\(125^0C \)</span>respectively. The heat current in CD is P watt. The value of P is ................. .</p>

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