Mechanical Prop...

Work done in increasing the size of a soap bubble from a radius of 3 cm to 5 cm is nearly (Surface tension of soap solution = 0.03 Nm^–1)

A glass plate is partly dipped vertically in the mercury and the angle of contact is measured. If the plate is inclined , then the angle of contact will

The liquid meniscus in capillary tube will be convex. if the angle of contact is

If a water drop is kept between two glass plates, then its shape is

What is the shape when a non-wetting liquid is placed in a capillary tube

When two soap bubbles of radius r₁ and r₂(r₂ > r₁) coalesce, the radius of curvature of common surface is

A long cylindrical glass vessel has a small hole of radius r at its bottom. The depth to which the vessel can be lowered vertically in the deep water bath (surface tension T) without any water entering inside is

If the surface tension of a soap solution is 0.03 MKS units, then the excess of pressure inside a soap bubble of diameter 6 mm over the atmospheric pressure will be

The pressure of air in a soap bubble of 0.7cm diameter is 8 mm of water above the pressure outside. The surface tension of the soap solution is

Pressure inside two soap bubbles are 1.01 and 1.02 atmospheres. Ratio between their volumes is