Q 1210234119.     When the air temperature is `-10^0C`, the ice on a large shallow lake in creases by I em in 12 minutes. Find the thermal conductivity of ice. (Density of ice `= 900 kg m^(-3)` and `L = 330 xx 10^3 J k g^(-1)`


A

`2 J S^(-1)K^(-1)`

B

`2 6 J S^(-1)K^(-1)`

C

`2 .06 J S^(-1)K^(-1)`

D

`4 .06 J S^(-1)K^(-1)`

HINT

Heat conducted is short interval `dt` = Heat given out by ice formed

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