A slab of stone of area 
and thickness 
is exposed on the lower surface to steam at 
. A block of ice at 
rests on upper surface of the slab. In one hour 
of ice is melted. The tiermal conductivity of the stone in 
is
(Latent heat of ice 
)
Text Solution
Verified by ExpertsThe correct answer is:
D
Given, area of slab of stone, 
Thickness of stone slab, 
Temperature difference, 
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