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The thickness of ice in a lake is 10 cm ...

The thickness of ice in a lake is 10 cm and its temperature is `-10^(0)C`. The thermal conductivity of ice = 0.004 cal `cm^(-1)" sec"^(-1)""^(0)C^(-1)`. Density of ice = 0.92 g/cc, latent heat of ice = 80 cal/g. The time taken for thickness of ice to be doubled is

A

`10^(6)` second

B

`2.75xx10^(5)` second

C

`10^(4)` second

D

`9.2xx10^(5)` second

Text Solution

Verified by Experts

The correct Answer is:
B
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