Physics - Heat & Thermo Question with Solution | TestHub

There is ice formation on a tank of water of thickness 10 cm. How much time will it take to have a layer of ice 0.1 cm below it? The outer temperature is $-5^{\circ }$C, the thermal conductivity of ice is 0.005 cal $c{m}^{-1}$$s^{-1}$ ${}^{\circ }$$C^{-1}$, the latent heat of ice is 80 cal $g^{-1}$ and the density of ice is 0.91 g $c{m}^{-3}$.