Home › CBSE Class 11 (Science) › Physics › Mechanical Properties of Fluids › Surface tension arises because surface molecules…
Surface tension arises because surface molecules have what?
ALess potential energy
BExcess potential energy
CZero kinetic energy
DGreater total mass
Answer & Solution
Correct answer: B. Excess potential energy
Molecules at the surface lack neighbours on one side, so their potential energy exceeds that of interior molecules.
Related questions
What happens to oil droplets in pure water without any surfactant?What effect does adding a surfactant have on soap bubbles in water?What is the direction of Stokes drag on a slow sphere in a fluid?Which laboratory device is based on Stokes's law for a sphere sinking in a stationary liquA sphere falls at terminal speed in a viscous fluid. Doubling its radius changes that speeA narrow tube lifts a liquid against gravity because of surface tension. What is this effeIn SI units, surface tension is expressed in which unit?By roughly what factor can added surfactants lower the surface tension of water?