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In Bernoulli's theorem, which of the following is conserved?

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Important Questions on Fluid Dynamics

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11th West Bengal Board
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A Text Book of PHYSICS PART I : CLASS 11>Chapter 14 - Fluid Dynamics>EXERCISE>Q 21
Two pipes P and Q having diameters 2×10-2 m and 4×10-2 m respectively are joined in series with the main supply line of water. The velocity of water flowing in pipe P is
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A Text Book of PHYSICS PART I : CLASS 11>Chapter 14 - Fluid Dynamics>EXERCISE>Q 22
If a ball of steel (density ρ=7.8 gcm-3) attains a terminal velocity of 10 cms-1 when falling in a tank of water (coefficient of viscosity η=8.5×10-4 Pa-s) water then its terminal velocity in glycerine ρ=1.2 gcm-3, η=13.2 Pa-s would be nearly?
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A Text Book of PHYSICS PART I : CLASS 11>Chapter 14 - Fluid Dynamics>EXERCISE>Q 23
Water is flowing continuously from a tap having an internal diameter 8×10-3 m. The water velocity as it leaves the tap is 0.4 m/s. The diameter of the water stream at a distance 2×10-1 m below the tap is close to
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A Text Book of PHYSICS PART I : CLASS 11>Chapter 14 - Fluid Dynamics>EXERCISE>Q 24
Eight equal drops of water are falling through air with a steady velocity of 10 cm s-1. If the drops combine to form a simple drop big in size, then the terminal velocity of this big drop is
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A Text Book of PHYSICS PART I : CLASS 11>Chapter 14 - Fluid Dynamics>EXERCISE>Q 25
A liquid of density 800 kg m-3 is filled in a tank open at the top. The pressure, of the liquid, at the bottom of the tank is 6.4 atm. The velocity of efflux through a hole at the bottom is (1 atom =105 N m-2)
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A Text Book of PHYSICS PART I : CLASS 11>Chapter 14 - Fluid Dynamics>EXERCISE>Q 26
A spherical solid ball of volume V is made of a material of density ρ1. It is falling through a liquid of density ρ2ρ2<ρ1. [Assume that the liquid applies a viscous force on the ball that is proportional to the square of its speed v, i.e. Fviscous=-k^v2(k>0)]. The terminal speed of the ball is
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A Text Book of PHYSICS PART I : CLASS 11>Chapter 14 - Fluid Dynamics>EXERCISE>Q 27
A cylindrical vessel of height 0.90 m kept filled upto the brim. It has four holes 1, 2, 3, 4 which are respectively at heights 0.20 m, 0.30 m, 0.40 m and 0.50 m from the horizontal floor. The tank is placed on that horizontal floor. The water falling at the maximum horizontal distance from the vessel comes from
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A Text Book of PHYSICS PART I : CLASS 11>Chapter 14 - Fluid Dynamics>EXERCISE>Q 28

A liquid is kept in a cylindrical vessel which is rotated about its axis. The liquid rises at the sides, Fig. 15.37. If the radius of the vessel is 0.05 m and the speed of rotation is 2 rev/s, the difference in the height of the liquid at the centre of the vessel and its side is

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