A capillary tube when immersed vertically in a liquid records a rise of 3.0 cm. If the tube is half immersed in the liquid at an angle of 60^o with the vertical, the length of the liquid column along the tube will be :

Liquid rises to a height of 2 cm in a capillary tube.  The angle of contact between solid and liquid is zero.  The tube is depressed more now so that the tip of the capillary tube is only 1 cm above the liquid, the apparent angle of contact between solid and liquid is

Radius of one arm of hydraulic lift is four times of radius of other arm.  What force should be applied on narrow arm to lift 100 kg ?

A closed compartment containing gas is moving with some acceleration in horizontal direction.  Neglect effect of gravity.  Then the pressure in the compartment is

In old age arteries carrying blood in the human body become narrow resulting in an increase in the blood pressure.  This follows from

The radii of two drops are in the ratio of 3 : 2, their terminal velocities are in the ratio

Motion of a liquid in a tube is best described by

n small drops of radius r, combine to form a bigger drop of the radius R.  If the energy evolved provides K.E to the drop then the speed of the drop will be (density of drop = d and surface tension of liquid = T)

A hemispherical portion of radius R is removed from the bottom of a cylinder of radius R.  The volume of the remaining cylinder is V and mass M.  It is suspended by a string in a liquid of density , where it stays vertical.  The upper surface of the cylinder is at a depth h below the liquid surface.  The force on the bottom of the cylinder by the liquid is

A steel ball is dropped in oil, then