1.

Water is being boiled in a flat bottom kettle placed on a stove. The area of the bottom is \[3000\text{ }c{{m}^{2}}\] and the thickness is 2 mm. If the amount of steam produced is 1 g/min. Calculate the difference of temperature between the inner and outer surface of the bottom. Thermal conductivity for the material of kettle is \[0.5\,cal/{{\,}^{o}}C/s/cm\] and the latent heat of steam is 540 cal/gm.

A. \[1.2\times {{10}^{-3}}{{\,}^{o}}C\]
B. \[2.4\times {{10}^{-3}}{{\,}^{o}}C\]
C. \[3.6\times {{10}^{-3}}{{\,}^{o}}C\]
D. \[4.8\times {{10}^{-3}}{{\,}^{o}}C\]
Answer» B. \[2.4\times {{10}^{-3}}{{\,}^{o}}C\]


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