Question 1. A number of small drops of mercury coalesce adiabatically to form a single drop. The temperature of drop (a) Increases (b) Is infinite (c) Remains unchanged (d) May decrease or increase depending upon size
Correct option is A) Explanation : When a number of drops of mercury are adiabatically coalesced then the total surface area of bigger drop will decrease which means that the small drops will have more potential energy compared to the bigger drop due to more surface area so this potential energy difference will be used in increasing the temperature of bigger drop. Hence, Option A is correct
