Q .     A slab of stone of area `0.36m^{2}` and thickness `0.1` is exposed on the lower surface to steam at `100^{o}C`. A block of ice at `0^{o}C` rests on the upper surface of the slab. In one hour `4.8kg` of ice is melted. The thermal conductivity of slab is- (Given latent heat of fusion of ice=`3.36\times 10^{5}Jkg^{-1}`)

AIPMT 2012
A

`1.29J//m//s//^{o}C`

B

`2.05J//m//s//^{o}C`

C

`1.02J//m//s//^{o}C`

D

`1.24J//m//s//^{o}C`

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