Question

Kishore's mother offered his father a cup of tea. His father told Kishore to cool the tea. Then Kishore cooled the tea by placing before a running fan. Can you analyse why Kishore used fan to cool the tea?

Answer 1

yes, he used the fan because the cool air blow by the fan go away by absorbing some heat from the hot tea such that thermal equilibrium takes place and the tea gets cold
                    net heat lost by tea = net heat gain by air molecules

Answer 2

see we know that evaporation causes cooling and the fast moving air ( caused by the fan ) caused grey evaporation which cooled the tea.... we have read that wind is 1 of the factors influencing evaporation! Thats why...