Mechanical Prop...

The work done increasing the size of a soap film drom 10cm × 11cm or 3 × 10^–4 Joule. The surface tension of the film is

The relation between surface tension T. Surface area A and surface energy E is given by.

The radill of two soap bubbles are r₁ and r₂. In isothermal conditions two meet together is vacum Then the radius of the resultant bubble is given by

A spherical drop of coater has radius 1 mm if surface tension of contex is 70 × 10^–3 N/m difference of pressures between inside and outside of the spherical drop is

Two bubbles A and B (A > B) are joined through a narrow tube than

A capillary tube at radius R is immersed in water and water rises in it to a height H. Mass of water in the capillary tube is M. If the radius of the tube is doubled. Mass of water that will rise in the capillary tube will now be

In a capillary tube water rises by 1.2 mm. The height of water that will rise in another capillary tube having half the radius of the first is

A large number of water drops each of rdius r combine to have a drop of radius R. If the surface tension is T and the mechanical equilvalent at heat is J then the rise in tempreature will be

A soap bubble is blown with the help of a mechanical pump at the mouth-of a tube the pump produces a certion increase per minit 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