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Figure, shown three different arrangemen...

Figure, shown three different arrangements of materials 1, 2 and 3 to from a wall. Thermal conductivities are `k_(1)gtk_(2)gtk_(3)`. The left side of the wall is `20^(@)C` higher than the right side. The temperature difference `DeltaT` across the material 1 has following relation in three cases

A

In steady state, the rate of energy conduction through the wall III is greatest

B

In steady state, the rate of energy conduction though all the walls `(I),(II)` and `(III)` are same

C

In steady state, temperature difference across material l is greatest in wall `II`.

D

In steady state, temperature differnce across material l is same in all the walls

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The correct Answer is:
B, D
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