1.

An ice box made of styrofoam (thermal conductivity =0.01" Jm"^(-1)s^(-1)K^(-1)) is used to keep liquids cool. It has a total wall area including lid of 0.8" m"^(2) and wall thickness of 2.0 cm. A bottle of water is placed in the box and filled with ice. If the outside temperature is 30^(0)C the rate of flow of heat into the box is : (in J-s^(-1))

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Answer :C


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