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A composite wall of area A is made of eq...

A composite wall of area A is made of equal thickness of lead and iron having thermal conductivities K and 2K, respectively. The temperature on the two sides of the composite wall are `100^(@)C` and `0^(@)C` with the layer on the hotter side. Calculate the steady -state temperature of the lead-iron interface.

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The correct Answer is:
`33.3^(@)C`
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