A layer of ice 0.15 m thick has formed on the surface of a deep pond. If the temperature of
Channel: Doubtnut
Date: 2021-11-08

A layer of ice 0.15 m thick has formed on the surface of a deep pond. If the temperature of upper surface of ice is constant and equql to that of air which is `-12^(@)C`, determine the time it will take to increase of ice layer by 0.2 mm. take latent heat of ice =80 cal  `g^(-1)`, density of ice =0.91 g `cm^(-3)` and thermal conductivity of ice =0.5 cal `s^(-1)m^(-1)K^(-1)` .