The three rods shown in figure have identical dimensions. Heat flows from the hot end at a rate of

The three rods shown in figure have identical dimensions. Heat flows from the hot end at a rate of 40 W in the arrangement ( a) . Find the rates of heat flow when the rods are joined as in arrangement ( b ) . ( Assume KAl = 200 W/ m °C and K Cu = 400 W/ m °C )

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