1.

An ice box used for keeping eatable cold has a total wall area of \[1\ metr{{e}^{2}}\] and a wall thickness of \[5.0cm\]. The thermal conductivity of the ice box is \[K=0.01\ joule/metre{{-}^{o}}C\]. It is filled with ice at \[{{0}^{o}}C\] along with eatables on a day when the temperature is 30°C. The latent heat of fusion of ice is \[334\times {{10}^{3}}joules/kg\]. The amount of ice melted in one day is (\[1day=86,400\ \sec onds\])                              [MP PMT 1995]

A.            \[776\ gms\]                        
B.            \[7760\ gms\]
C.            \[11520\ gms\]                    
D.            \[1552\ gms\]
Answer» E.


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