List of top Physics Questions on Surface Tension asked in MHT CET

If we dip capillary tubes of different radii \(r_n\) in water and the water rises to different heights \(h_n\) in them, then (\(n = 1,2,3\) .........)

The excess pressure inside a soap bubble of radius \(2.5\) cm is \(48\) dyne/cm\(^2\). The surface tension of soap solution in dyne /cm is

If \(450\) erg of work is done in blowing a soap bubble of radius '\(r\)', the additional work required to be done to blow it to a radius equal to \(3r\) is

The energy needed for breaking a liquid drop of radius 'R' into 'n' droplets each of radius 'r' is
[ \(T\) = surface tension of the liquid]

In most liquids, with rise in temperature surface tension of liquid

A metal wire of length 'L' and density 'd' floats horizontally on the free surface of water. The maximum radius of the wire does not sink in water is
[ \(T\) = surface tension of water , \(g\) = gravitational acceleration]

The pressures inside two soap bubbles A and B are \(1.02\) atmosphere and \(1.04\) atmosphere respectively. The ratio of volume of bubble A to that of bubble B is (outside pressure \(= 1\) atmosphere)

One large soap bubble of diameter 'D' breaks into \(64\) bubbles having surface tension 'T'. The change in surface energy is

If the shape of the liquid surface is curved, then

The excess pressure inside the first soap bubble is three times that inside the second soap bubble. The ratio of the volume of the first soap bubble to the volume of the second soap bubble is

Two soap bubbles, A and B, have radii in the ratio \(3:2\). The excess pressure inside the bubble A to that of B is in the ratio

When a capillary tube of radius 'r' is immersed in water, rise of water is upto height 'h'. The mass of water in capillary tube is 'm'. When another capillary tube of radius 'xr' is immersed in water, the mass of water that will rise in this tube is

The excess pressure inside a spherical water drop A is four times that of another water drop B. Then, the ratio of the mass of water drop A to that of drop B is

In a capillary tube of area of cross-section '\(a\)' water rises to height '\(h\)'. To what height will water rise in a capillary tube of area of cross-section \(4a\)?

A soap bubble of radius \(\frac{1}{\sqrt{π}}\) cm is expanded to radius \(\frac{3}{\sqrt{π}}\) cm. Surface tension of soap solution is 25 dyne/cm. The work done during expansion in erg is

One thousand small water drops of equal radii combine to form a big drop. The ratio of final surface energy to the total initial surface energy is

Under isothermal condition, two soap bubbles of radii \(r_1\) and \(r_2\) combine to form a single soap bubble of radius R. The surface tension of the soap solution is (P = outside pressure)

A liquid is at rest in a container. In a sphere of influence, the liquid molecule at its centre is

A square frame of each side L is dipped in a soap solution and taken out, the force acting on the film formed is ( T = surface tension of soap solution)

Three liquids have same surface tension and densities \(ρ_1\), \(ρ_2\) and \(ρ_3\) (\(ρ_1 < ρ_2 < ρ_3\)). In three identical capillaries rise of liquid is same. The corresponding angle of contact \(θ_1\), \(θ_2\) and \(θ_3\) are related as

The excess pressure inside the first soap bubble of radius \(R_1\) is three times that inside the second soap bubble of radius \(R_2\). The ratio of volumes of the first to second bubble is

Water rises to a height \(3\) cm in a capillary tube. If cross-sectional area of capillary tube is reduced to \(1/3^{rd}\) of its initial area then water will rise to a height of

A soap bubble of radius R is blown. After heating the solution, a second bubble of radius 2R is blown. The work required to blow the second bubble in comparison to that required for the first bubble is

The excess pressure inside the first soap bubble of radius \(R_1\) is three times that inside the second soap bubble of radius \(R_2\). The ratio of volumes of the first bubble to second bubble is

A spherical drop of liquid splits into \(1000\) identical spherical drops. If \(u_i\) is the surface energy of the original drop and \(u_f\) is the total surface energy of the resulting drops, the (ignoring evaporation). \(u_f/u_i = (10/x)\). Then value of \(x\) is