Heat is conducted through a slab compose...

Heat is conducted through a slab composed of paralel layers of two different materials of conductivities `134.4` SI units and 58.8 SI units and of thickness `3.6cm` and `4.2cm` respectively. The temperature of the outer faces of the compound slab are `96^(@)C` and `8^(@)C`. Find (i) the temperature of the interface, (ii) temperature gradient in each section of the slab.

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The correct Answer is:

`[(i) 72^(@)C`, (ii) ` 666.7^(@)C` per metre, (iii) `1523.8^(@)C` per metre]`

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