Question

A liquid is contained in a vessel. The liquid-solid adhesive force is very weak as compared to the cohesive force in the liquid. The shape of the liquid surface will be:

• A. horizontal
• B. vertical
• C. concave
• D. convex

Answer 1

The correct option is D convex

When cohesive forces are stronger in liquid then liquid-solid adhesive force, the liquid tries to remain in the form of globule or nearly spherical in shape, for which contact angle is more then ${90}^o$, which is convex as seen from outwards.