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In a 10 m deep lake, the bottom is at a ...

In a 10 m deep lake, the bottom is at a constant temperature of `4^(@)C`. The air temperature is constant at `- 4^(@)C. K_(ice) = 3 K_(omega)`. Neglecting the expansion of water on freezing, the maximum thickness of ice will be

A

`7.5`m

B

`6`m

C

`5` m

D

`2.5`m

Text Solution

Verified by Experts

The correct Answer is:
A
`overset(**)(Q) = (KA(4-0))/(10-x) = (3KA(0+4))/(x) implies x = 7.5`m
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