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Heat transfer

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By Expert Faculty of Sri Chaitanya
Question

Two identical conducting rods are first, connected independently to two vessels, one containing water at 100oC and the other containing ice at 0oC. In the second case, rods are joined end to end and are connected to t same vessels .If q1 and q2 (in g/s) are the rates of melting of ice in two cases, then the ratio of q1/q2 is _______.

Moderate
Solution

 Temperature difference  Thermal resistance =Ldmdtdmdt1 Thermal resitance ;q1R

The rods are in parallel in first case and they are in series in second case.

q1q2=2R(R/2)=4


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