Question

When there are no external forces, the shape of a liquid drop is determined by

• A. the surface tension of the liquid
• B. the heat capacity of the liquid
• C. the boiling point of the liquid
• D. the freezing point of the liquid

Answer 1

The correct option is A

the surface tension of the liquid

When there are no external forces, the shape of a liquid drop is determined by the surface tension of the liquid. Surface tension acts in a way that it reduces the surface area of the liquid. For a given volume the surface area of a sphere is least.

Hence, when a drop of liquid is not under the influence of any external force they are spherical in shape.