Fluid Mechanics Questions

A glass capillary tube is of the shape of a truncated cone with an apex angle α so that its two ends have cross sections of different radii. When dipped in water vertically, water rises in it to ...

In a U-tube diameter of two limbs are 0.5 cm and 1 cm respectively. and tube has filled with water (T = 72 dyne/cm) then liquid level difference between two limbs will be...

The lower surface of a cube is fixed. On its upper surface, force is applied at an angle of 30o from its surface. The change will be in its

Fig. shows the load-extension curves for four wires A, B, C and D. The dimensions of all the four wires are identical but materials of wires are different. Which wire has highest value of Young′...

Which of the following works on Pascal′s law ?

An aeroplane of mass 3 × 104 kg and total wing area of 120 m2 is in a level flight at some height. The difference in pressure between the upper and lower surfaces of its wings in kilopascals is (...

A block of density 2000 kg/m3 and mass 10 kg is suspended by a spring stiffness 100 N/m. The other end of the spring is attached to a fixed support. The block is completely submerged in a liquid of de...

A uniform capillary tube of inner radius r is dipped vertically into a beaker filled with water. The water rises to a height h in the capillary tube above the water surface in the beaker. The surface ...

A small object of uniform density rolls up a curved surface with an initial velocity ′v′. It reaches upto a maximum height of with respect to the initial position. The object is...

Assume that a drop of liquid evaporates by decrease in its surface energy, so that its temperature remains unchanged. What should be the minimum radius of the drop for this to be possible? The surface...

Spherical balls of radius R are falling in a viscous fluid of viscosity η with a velocity v. The retarding viscous force acting on the spherical ball is

Spherical balls of radius R are falling in a viscous fluid of viscosity η with a velocity v. The retarding viscous force acting on the spherical ball is

During an adiabatic process, the pressure of a gas is found to be proportional to the cube of its absolute temperature. The Poisson’s ratio of gas is

Water is filled up to a height h in a beaker of radius R as shown in the figure. The density of water is ρ, the surface tension of water is T and the atmospheric pressure is P0. Consider a vertic...

Water rises to a height of 10cm in capillary tube and mercury falls to a depth of 3.1 cm in the same capillary tube. If the density of mercury is 13.6 and the angle of contact for mercury is 135o, the...

If liquefied oxygen at 1 atmospheric pressure is heated from 50K to 300 K by supplying heat at constant constant rate. the graph of temperature vs time will be

A soap bubble of radius R and surface tension T is formed in vacuum. It is slowly charged so that it slowly expands. It is stopped charging when the radius becomes 2R. Find the amount of charge given ...

A capacitor stores energy in the form of :-

What is required heat of one mole of H2 gas at constant pressure when its temperature increase by 10oC :-

For determining flow velocity of a fluid at a point by using venturimeter, which of the following isused?