In a 10 metre deep lake, the bottom is at a constant temperature of 4^(0)C. The air temperature is constant at -4^(0)C. The thermal conductivity of ice is 3 times that of water. Neglecting the expansion of water on freezing, the maximum thickness of ice will be

In a 10 metre deep lake, the bottom is at a constant temperature of 4^

1.	In a 10 metre deep lake, the bottom is at a constant temperature of 4^(0)C. The air temperature is constant at -4^(0)C. The thermal conductivity of ice is 3 times that of water. Neglecting the expansion of water on freezing, the maximum thickness of ice will be
Answer» 7.5 m 6 m 5 m 2.5 m ANSWER :A