Admin Table of Contents
What is surface tension simple definition?
Surface Tension: “The property of the surface of a liquid that allows it to resist an external force, due to the cohesive nature of its molecules.” The cohesive forces between liquid molecules are responsible for the phenomenon known as surface tension.
What is surface tension and what causes it?
The surface tension arises due to cohesive interactions between the molecules in the liquid. At the bulk of the liquid, the molecules have neighboring molecules on each side. As explained, the cohesive force between the molecules causes surface tension. The stronger the cohesive force, the stronger the surface tension.
What is surface tension and it’s unit?
Newton per metre / SI unit
Surface tension, represented by the symbol γ (alternatively σ or T), is measured in force per unit length. Its SI unit is newton per meter but the cgs unit of dyne per centimeter is also used.
What do you mean by surface tension of liquid Class 11?
Surface tension is the property of any liquid by virtue of which tries to minimize its free surface area. Surface tension of a liquid is measured as the force acting per length on an imaginary line drawn tangentially on the free surface the liquid. Surface tension S = Force/Length = F/l = Work done/Change in area.
What is surface tension experiment?
Fill a bowl with water. Shake the black pepper onto the surface of the water (Notice how it stays afloat on the water? That is the surface tension holding the layer up) Take a toothpick and put the end into soap so that it coats the end. Gently touch the surface of the water with the toothpick.
What is 12th surface tension?
Surface tension is the property of a liquid by virtue of which its free surface behaves like a stretched membrane and supports, comparatively heavier objects placed over it. It is measured in terms of force of surface tension.
What is surface tension and state its unit?
The force per unit length perpendicular to a line drawn in the surface of the liquid is the surface tension. Its SI unit is newtons per metre, and its CGS unit is dynes per centimetre.