Question

(i) It is observed that the temperature of the surroundings starts falling when the ice in a frozen lake starts melting. Give a reason for the observation.
(ii) How is the heat capacity of the body related to its specific heat capacity?

Answer 1

(i) When ice converts into water it needs a high amount of heat energy, as the latent heat of fusion of ice is more. Therefore when frozen lake starts melting it absorbs a large amount of heat from the surrounding. As a result, the temperature of the surrounding falls and it becomes very cold.
(ii) The heat capacity of the body is related to its specific heat capacity as:

Heat capacity $=$ mass $\left(m\right)\times$ specific heat capacity $\left(L\right)$