Physics-
General
Easy
Question
The temperature at the bottom of a pond of depth L is 4oC. The temperature of the air, just above the layer of ice frozen at the pond’s surface is –2oC for the past many days. The thermal conductivity of ice is three times that of water. The thickness of the frozen layer of ice must be
- 2L/3
- L/2
- L/3
- 3L/5
The correct answer is: 3L/5
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