Surface Tension...

A soap bubble is blown with the help of a mechanical pump at the mouth of a tube. The pump produces a certain increase per minute in the volume of the bubble, irrespective of its internal pressure. The graph between the pressure inside the soap bubble and time t will be-

Which graph represents the variation of surface tension with temperature over small temperature ranges for water?

A rectangular film of liquid is extended from (4 cm x 2 cm) to (5 cm x 4 cm). If the work done is 3 x 10^-4 J, the value of the surface tension of the liquid is:

The wettability of a surface by a liquid depends primarily on:

A soap bubble, having a radius of 1 mm, is blown from a detergent solution having a surface tension of 2.5×10⁻²N/m. The pressure inside the bubble equals at a point Z₀ below the free surface of the water in a container. Taking g= 10 m/s², density of water = 10³kg/m³, the value of Z₀ is:

The surface tension of the soap solution is 2 x 10⁻²²  N/m. If a soap bubble of radii 4 cm is blown, then the amount of work done is:

Two water droplets merge with each other to form a larger droplet isothermally. In this process

A liquid does not wet the solid surface if the angle of contact is :

A U-shaped wire is dipped in a soap solution and removed. The thin soap film formed between the wire and the light slider supports a weight of 1.5 × 10^–2 N (which includes the small weight of the slider). The length of the slider is 30 cm. The surface tension of the film is:

What is the pressure inside the drop of mercury of radius 3.00 mm at room temperature? The surface tension of mercury at that temperature (20⁰ C) is 4.65 × 10^–1 N m^–1. The atmospheric pressure is 1.01 × 10⁵ Pa.