A slab of stone of area 0.36
and thickness 0.1 m is exposed on the lower surface to steam at
. A block of ice at
rests on the upper surface of the slab. In one hour, 4.8 kg of ice is melted. The thermal conductivity of slab is (Given latent heat of fusion of ice 
Text Solution
Verified by ExpertsThe correct answer is:
A

Heat flows through the slab in
is

(i)
So, ice melted by this heat is
(ii)
Or 
From (i) and (ii), we get


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