A rectangular ice box of total surface area of 1000 {\cm}^2 initially contains 1.5 kg of ice at 0{ }^{\circ} {\C}. If the thickness of the walls of the box is 2 mm and the temperature outside the box is 42^{\circ} {\C}, then the mass of the ice remaining in the box after 160 minutes is (Thermal conductivity of the material of the box =10^{-2} {\Wm}^{-1} {\K}^{-1} and latent heat of the fusion of ice =336 \times 10^3 {\J} {\kg}^{-1} )

TG EAMCET 3 May 2025 Shift 2 Paper

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A rectangular ice box of total surface area of 1000cm2 initially contains 1.5 kg of ice at 0‌∘C. If the thickness of the walls of the box is 2 mm and the temperature outside the box is 42∘C, then the mass of the ice remaining in the box after 160 minutes is (Thermal conductivity of the material of the box =10−2Wm−1K−1 and latent heat of the fusion of ice =336×103Jkg−1 )

‌0.6‌kg
‌0.9‌kg
‌0.8‌kg
‌0.7‌kg

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