Question

When a number of small droplets combines to form a large drop, then

• A. energy is absorbed
• B. energy is liberated
• C. energy is neither liberated nor absorbed
• D. process is independent of energy

Hint:

When a number of small droplets combines to form a large drop, then

Answer 1

The Correct Option is B

Step 1: Surface Area Analysis
When small droplets coalesce into a single large drop, the total surface area decreases.
Step 2: Energy Relation
Surface energy is proportional to surface area ($E = S \times A$).
Step 3: Answer Analysis
Since the surface area decreases, surface energy is released (liberated).
Hence, the Answer is: (B)