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Water is boiled in flat bottom kettle pl...

Water is boiled in flat bottom kettle placed in a stove. The area of the bottom is `3000 cm^2` and the thickness is2 mm. If the amount of steam produced is `1 g min^(-1)`. Then, the difference of temperature between inner and outer surfaces of the bottom is `[K, for the material of kettle is 0.5 cal^0 C ^(-1) s^(-1) 1 cm ^(-1)]`

A

`0.12 xx 10^(-5) K`

B

`1.9 xx 10^(-3) K`

C

`1.3xx 10^(-4)"^0C`

D

`1.2 xx 10^(-3) K`

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