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A layer of ice 0.15 m thick has formed o...

A layer of ice 0.15 m thick has formed on the surface of a deep pond. If the temperature of upper surface of ice is constant and equql to that of air which is `-12^(@)C`, determine the time it will take to increase of ice layer by 0.2 mm. take latent heat of ice =80 cal `g^(-1)`, density of ice =0.91 g `cm^(-3)` and thermal conductivity of ice =0.5 cal `s^(-1)m^(-1)K^(-1)` .

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SL ARORA-Thermal Properties of Matter-Exercise
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  2. One end of a 0.25 m long metal bar is in steam and the other is in con...

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  3. A layer of ice 0.15 m thick has formed on the surface of a deep pond. ...

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  4. Water is boiled in a rectangular steel tank of thickness 2 cm by a con...

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  5. Estimate the rate at which ice would melt in a wooden box 20 mm thick ...

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  6. Steam at 373K is passed through a tube of radius 50 cm and length 3m. ...

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  7. The thermal conductivity of copper is four times that of brass. Two ro...

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  8. The temperature difference between the two ends of a bar 1.0 m long is...

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  9. The ratio of the areas of cross section of two rods of different mater...

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  10. A room at 20^@C is heated by a heater of resistence 20 ohm connected t...

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  11. A pan filled with hot food cools from 94^(@)C to 86^(@)C in 2 minutes ...

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  12. A pinhole is made in a hollow sphere of radius 5cm whose inner wall is...

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  13. How much energy in radiated per minute from the filament of an incande...

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  14. A full radiator at 0^(@)C radiates energy at the rate of 3.2 xx 10^(4)...

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  15. To what temperature must a black body be raised in order to double tot...

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  16. The temperature of a body in increased from 27^(@)C to 127^(@)C. By wh...

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  17. A black body initially at 27^(@)C is heated to 327^(@)C is heated to 3...

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  18. An electric bulb with tungsten filament having an area of 0.25 cm^(2) ...

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  19. A sphere of radius 10 cm is hung inside an oven walls are at a tempera...

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  20. A body which has a surface area5.00 cm^(2) and a temperature of 727^(@...

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