Mechanical Prop...

If two soap bubbles of equal radii r coalesce, then the radius of curvature of interface between two bubbles will be

The work done in blowing a soap bubble of surface tension 0.06 Nm^-1 from 2 cm radius to 5 cm radius is

Two drops of equal radius coalesce to form a bigger drop. What is ratio of surface energy of bigger drop to smaller one?

Energy of bubble is E. If one thousand such bubbles coalesce to form a large bubble then its energy is E₁, then ratio E and E₁ is equal to

Two mercury drops (each of radius r) merge to form a bigger drop. The surface energy of the bigger drop, if T is the surface tension, is

Determine the energy stored in the surface of a soap bubble of radius 2.1 cm if its surface tension is 4.5 × 10^-2 Nm^-1.

With an increase in temperature, surface tension of liquid (except molten copper and cadmium)

The surface tension of soap solution is 0.03 Nm^-1. The work done in blowing to form a soap bubble of surface area 40 cm² , (in J), is

One drop of soap bubble of diameter D breakes into 27 drops having surface tension T. The change in surface energy is

A drop of oil is placed on the surface of water then it will spread as a thin layer, because