Fluids Test - 3...

Angle of contact of a liquid with a solid depends on

A U-tube is partially filled with water. Oil which does not mix with water is next poured into one side, until water rises by 25 cm on the other side. If the density of oil is 0.8, the oil level will stand higher than the water level by

Two solid spheres of same metal but of mass M and 8M fall simultaneously on a viscous liquid and their terminal velocities are v and nv, then value of n is 

A liquid will not wet the surface of a solid, if the angle of contact is

Drops of a liquid are usually more spherical in shape than larger drops of same liquid because

A vessel whose bottom has a round hole with diameter 0.1 mm, is filled with water. The maximum height upto which water can be filled without leakage is

(Surface tension of water =75 dyne/cm and g = 1000 cm s^-2)

A spherical liquid drop of radius R is divided into eight equal droplets. If surface tension is T, then the work done in this process will be

There are two hole O₁ and O₂ in a tank of height H . The water emerging from O₁ and O₂ strikes the ground at the same points, as shown in figure. Then

With the increase in temperature, the surface tension of a liquid

Water flows in a streamlined manner through a capiliary tube of radius a, the pressure difference being p and the rate of flow Q. If the radius is reduced to a/2 and the pressure increased to 2p, the rate of flow becomes