1.

Water is being boiled in a flat bottom kettle placed on a stove. The area of the bottom is 3000 cm^(2) and its thickness is 2 mm. If the amount of steam produced is 1 g/min, calculate the difference of temperatures between the inner and outer surfaces of the bottom. Thermal conductivity for the material of the kettle is 0.5cal//""^(0)C//s//cm, and the latent heat of steam is 540 cal/g.

Answer»

`1.2xx10^(-3)""^(0)C`
`2.4xx10^(-3)""^(0)C`
`3.6xx10^(-3)""^(0)C`
`4.8xx10^(-3)""^(0)C`

ANSWER :A


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