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 is _______.
The rods are in parallel in first case and they are in series in second case.
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In an Air conditioner compartment of a train if a material of thermal conductivity K and thickness 10 cm is required to fulfill the purpose. To do so there is a need of two glass each of thickness 1 cm with air gap of 8 cm between them. If thermal conductivity of glass and air are 1 W/mK and 0.01 W/mK then the value of K is:
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