Surface Tension & Capillarity: JEE Questions & Solutions

Surface tension of two liquids (having same densities), T1 and T2 are measured using capillary rise method utilizing two tubes with inner…

Given below are two statements: Statement I: Pressure of a fluid is exerted only on a solid surface in contact as the fluid-pressure does…

When a part of a straight capillary tube is placed vertically in a liquid, the liquid rises upto certain height h. If the inner radius of…

A soap bubble of surface tension 0.04 N/m is blown to a diameter of 7 cm. If (15000 - x) J of work is done in blowing it further to make…

Two soap bubbles of radius 2 cm and 4 cm, respectively, are in contact with each other. The radius of curvature of the common surface, in…

Given below are two statements: Statement-I: The hot water flows faster than cold water. Statement-II: Soap water has higher surface…

An air bubble of radius 1.0 mm is observed at a depth of 20 cm below the free surface of a liquid having surface tension 0.095 J/m^2 and…

An air bubble of radius 0.1 cm lies at a depth of 20 cm below the free surface of a liquid of density 1000 kg/m^3. If the pressure inside…

The amount of work done to break a big water drop of radius R into 27 small drops of equal radius is 10 J. The work done required to break…

Two water drops each of radius r coalesce to form a bigger drop. If T is the surface tension, the surface energy released in this process…

The excess pressure inside a soap bubble A in air is half the excess pressure inside another soap bubble B in air. If the volume of the…

Two liquids A and B have A and B as contact angles in a capillary tube. If K= A / B, then identify the correct statement:

A capillary tube of radius 0.1 mm is partly dipped in water (surface tension 70 dyn/cm and glass water contact angle 0^) with 30^ inclined…

A small liquid drop of radius R is divided into 27 identical liquid drops. If the surface tension is T, then the work done in the process…

A big drop is formed by coalescing 1000 small identical drops of water. If E1 is the total surface energy of 1000 small drops and E2 is the…

Given below are two statements: Statement I: If a capillary tube is immersed first in cold water and then in hot water, the height of…

The excess pressure inside a soap bubble is three times the excess pressure inside a second soap bubble. The ratio between the volume of…

A spherical drop of liquid splits into 1000 identical spherical drops. If ui is the surface energy of the original drop and uf is the total…

The surface tension of a soap bubble is 2 10^-2 N/m. Work done to increase the radius of the bubble from 3.5 cm to 7 cm will be:

The height of the liquid column raised in a capillary tube of certain radius when dipped in liquid A vertically is 5 cm. If the tube is…

If 1000 droplets of water of surface tension 0.07 N/m, having same radius 1 mm each, combine to form a single drop. In the process, the…

A mercury drop of radius 10^-3 m is broken into 125 equal size droplets. Surface tension of mercury is 0.45 N m^-1. The gain in surface…

The surface tension of soap solution is 3.5 10^-2 N m^-1. The amount of work done required to increase the radius of soap bubble from 10 cm…

There is an air bubble of radius 1.0 mm in a liquid of surface tension 0.075 N m^-1 and density 1000 kg m^-3 at a depth of 10 cm below the…