Choose the correct option for the following Assertion (A) and Reason (R).

Question

G1 Physics · Accepted Answer

For a liquid surface, surface energy = S×surface area. During coalescence of small drops, the total volume is conserved but the total surface area decreases. Therefore the final surface energy is smaller than the initial surface energy. The difference can appear as heat or other forms of energy. Thus both Assertion and Reason are true, and the Reason correctly explains the Assertion. Correct option: A.