Advertisements
Advertisements
Question
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
Options
energy = `4 "VT" (1/"r" - 1/"R")` is released
energy = `3 "VT" (1/"r" + 1/"R")` is absorbed
energy = `3 "VT" (1/"r" - 1/"R")` is released
energy is neither released nor absorbed
Advertisements
Solution
energy = `3 "VT" (1/"r" - 1/"R")` is released
APPEARS IN
RELATED QUESTIONS
Draw a neat labelled diagram showing forces acting on the meniscus of water in a capillary tube.
Frictional force between solids operates even when they do not move with respect to each other. Do we have viscous force acting between two layers even if there is no relative motion?
Which of the following graphs may represent the relation between the capillary rise hand the radius r of the capillary?
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.
Why is the surface tension of paints and lubricating oils kept low?
Describe an experiment to prove that friction depends on the nature of a surface.
What are the factors affecting the surface tension of a liquid?
What is capillarity?
Soap solution is used for cleaning dirty clothes because ______.
The surface tension of boiling water is ______.
