A composite block is made of slabs $A, B, C, D$ and $E$ of different thermal conductivities (given in terms of a constant $K$ ) and sizes (given in terms of length, $L$ ) as shown in the figure. All slabs are of same width. Heat $'Q'$ flows only from left to right through the blocks. Then in steady state $Image$

$(A)$ heat flow through $A$ and $E$ slabs are same.

$(B)$ heat flow through slab $E$ is maximum.

$(C)$ temperature difference across slab $E$ is smallest.

$(D)$ heat flow through $C =$ heat flow through $B +$ heat flow through $D$.

223339-q

  • [IIT 2011]
  • A

    $(A,B,C)$

  • B

    $(A,B,D)$

  • C

    $(A,C,D)$

  • D

    $(B,C,D)$

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