Fluids Test - 2...

A diagram shows a venturimeter, through which water is flowing. The speed of water at X is 2 cms^-1. The speed of water at Y (g = 1000 cms^-2) is

A piece of paraffin wax of density 0.9 gm/cc floats on water. A layer of turpentine of density 0.87 gm/cc is added on top of water until the wax is cntircly submerged. The ratio of the volume of wax immersed in water to that in turpentine is

Bernoulli's principle is based on the law of conservation of

By sucking through a straw, a student can reduce the pressure in his lungs to 750 mm of Hg (density = 13.6 gm/cm³). Using the straw, he can drink water from a glass up to a maximum depth of

A soap bubble of diameter 8 mm is formed in air. The surface tension of liquid is 30 dyne/cm. The excess pressure inside the soap bubble is

Two capillary tubes of the same length but different radii r₁ and r₂ are fitted in parallel to the bottom of a vessel. The pressure head is p. What should be the radius of a single tube that can replace the two tubes so that the rate of flow is same as before

A wooden block, with a coin placed on its top, floats in water as shown in fig. the distance ℓ and h are shown there. After some time the coin fails into the water, then

A solid ball of density half of that of water falls freely under gravity from a height of 19.6 m and then enters into water. Upto what depth will the ball go ?

Water rises in a capillary tube to a certain height such that the upward force due to surface tension is balanced by 75 x 10^-4 N force due to the weight of the liquid. If the surface tension of water is 6 x 10^-2 N/m, the inner circumference of the capillary must be

A cubical block of wood 10 cm on a side floats at the interface between oil and water as shown in figure with its lower face 2 cm below the interface. The density of oil is 0.6 gm/cm³. The mass of the block is