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A compound slab is composed of two parallel layers of different materials with thickness 3 cm and 2 cm. The temp of outer face of the slab are maintained at 100^(@)C and 0^(@)C If the conductivities are 0.36 and 0.16 cgs units, then the temp. of junction is : |
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Answer» `40^(@)C` `H_(1)=H_(2)`. `(k_(1)A(T_(1)-T))/(d_(1))=(k_(2)A(T-T_(2)))/(d_(2))` `(0.3xx(100-T))/(3)=(0.16xx(T-0))/(2)` `rArr""T=60^(@)c` Thus correct CHOICE is (b). |
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