Advertisements
Advertisements
प्रश्न
Is surface tension a vector?
उत्तर
No, surface tension is a scalar quantity.
Surface tension = `"Work done"/"Surface area"`, where work done and surface area both are scalar quantities.
APPEARS IN
संबंधित प्रश्न
A heavy mass is attached to a thin wire and is whirled in a vertical circle. The wire is most likely to break
A cubical metal block of edge 12 cm floats in mercury with one fifth of the height inside the mercury. Water in it. Find the height of the water column to be poured.
Specific gravity of mercury = 13.6.
Derive an expression for capillary rise for a liquid having a concave meniscus.
Describe an experiment to prove that friction depends on the nature of a surface.
A certain number of spherical drops of a liquid of radius R coalesce to form a single drop of radius R and volume V. If T is the surface tension of the liquid, then
Obtain an expression for the surface tension of a liquid by the capillary rise method.
Two spherical rain drops reach the surface of the earth with terminal velocities having ratio 16 : 9. The ratio of their surface area is ______.
The excess of pressure, due to surface tension, on a spherical liquid drop of radius 'R' is proportional to ______.
The length of a needle floating on water is 2 cm. The additional force due to surface tension required to pull the needle out of water will be (S.T. of water = 7.0 × 10−2 N/m).
A coaxial cylinder made of glass is immersed in liquid of surface tension ' S'. Radius of inner and outer surface of cylinder are R1 and R2 respectively. Height till which liquid will rise is (Density of liquid is p):
