A pond has an ice layer of thickness 3 cm. If K of ice is 0.005 CGS units, surface temperature of surroundings is −20∘C, density of ice is 0.9gm/cc, the time taken for the thickness to increase by 1 cm is
30 min
35 min
42 min
60 min
A
30 min
B
42 min
C
60 min
D
35 min
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Q1
A pond has an ice layer of thickness 3 cm. If K of ice is 0.005 CGS units, surface temperature of surroundings is −20∘C, density of ice is 0.9gm/cc, the time taken for the thickness to increase by 1 cm is
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Q2
Find the time for which a layer of ice 5 cm thick on the surface of a pond will increase its thickness by 0.1 cm when temperature of the surrounding air is −20oC Thermal conductivily of ice=2.1Wm−1K−1 density of ice=900Kgm−3 Latent heat of ice =3.36×105JKg−1
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Q3
Find the time for which a layer of ice 5 cm thick on the surface of a pond will increase its thickness temperature of the surrounding air is −20oC. Thermal conductivity of ice=2.1Wm−1K−1 density of ice=900kgm−3 Latent heat of ice=3.36×105Jkg−1
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Q4
A layer of ice 0.15m thick has formed on the surface of a deep pond. If the temperature of upper surface of ice is constant and equal to that of the air which is −12∘C , the time taken to increase the thickness of ice layer by 0.2mm is? [ Given : latent heat of ice = 80cal /g
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Q5
A pond of water at zero degree celsius is covered with layer of ice 4 cm thick if air temperature is -10 degree Celsius how how long it takes for ice thickness to increase to 8 cm k = 2 W/m°C,
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