Fluids Test - 1...

Water is flowing continuously from a tap having an internal diameter 8 x 10^-3 m. The water velocity as it leaves the tap is 0.4 ms^-1. The diameter of the water stream at a distance 2 x 10^-1 m below the tap is close to

Two metal spheres are falling through a liquid of density 2×10³kg/m³ with the same uniform speed. The material density of sphere 1 and sphere 2 are 8×10³kg/m³ and 11×10³kg/m³ respectively. The ratio of their radii 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 a deep water bath without any water entering inside is (surface tension = T and d = density of water)

A candle of diameter d is floating on a liquid in a cylindrical container of diameter D (D>>d) as shown in figure. If it is buming at the rate of 2 cm/hour then the top of the candle will

A ball of relative density 0.8 falls into water from a height of 2 m. The depth to which the ball will sink is (neglect viscous forces)

In the given figure, the velocity v₃ will be

There is hole of area a at the bottom of a cylindrical of area A. Water is filled upto a height h and water flows out in t second. If water is filled to a height 4h, it will flow out in time

There is a hole in the bottom of tank having water. If total pressure at bottom is 3 atm (1 atm=10⁵N/m²) then the velocity of water flowing from hole is

The reading of spring balance when a block is suspended from it in air, is 6 N. This reading is changed to 40 N when the block is immersed in water. The specific gravity of the block is

If work W is done in blowing a bubble of radius R from soap solution, then the work done in blowing a bubble of radius 2R from the same solution is