Q. A layer of ice of thickness y is on the surface of a lake. The air is at a constant temperature −θ∘C and the ice water interface is at 0∘. Then that the rate at which the thickness increases is given by.
dydt=kθLρy
where k is the thermal conductivity of the ice, L the latent heat of fusion and ρ is the density of the ice.Type 1 for true and 0 for false