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प्रश्न
Along a streamline ______.
विकल्प
the velocity of a fluid particle remains constant.
the velocity of all fluid particles crossing a given position is constant.
the velocity of all fluid particles at a given instant is constant.
the speed of a fluid particle remains constant.
उत्तर
Along a streamline the velocity of all fluid particles crossing a given position is constant.
Explanation:
As discussed above for a streamlined flow of a liquid velocity of each particle at a particular cross-section is constant, because Av = constant (law of continuity) between two cross-sections of a tube of flow. So we can say that along a streamline, the velocity of every fluid particle while crossing a given position is the same.
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संबंधित प्रश्न
Fill in the blanks using the word(s) from the list appended with each statement:
For a fluid in a steady flow, the increase in flow speed at a constriction follows (conservation of mass / Bernoulli’s principle)
Explain why When we try to close a water tap with our fingers, fast jets of water gush through the openings between our fingers
In a streamline flow,
(a) the speed of a particle always remains same
(b) the velocity of a particle always remains same
(c) the kinetic energies of all the particles arriving at a given point are the same
(d) the momenta of all the particles arriving at a given point are the same
Water flows through two identical tubes A and B. A volume V0 of water passes through the tube A and 2 V0 through B in a given time. Which of the following may be correct?
(a) Flow in both the tubes are steady.
(b) Flow in both the tubes are turbulent.
(c) Flow is steady in A but turbulent in B.
(d) Flow is steady in B but turbulent in A.
Water is flowing in streamline motion through a tube with its axis horizontal. Consider two points A and B in the tube at the same horizontal level.
(a) The pressures at A and B are equal for any shape of the tube.
(b) The pressures are never equal.
(c) The pressures are equal if the tube has a uniform cross section.
(d) The pressures may be equal even if the tube has a nonuniform cross section.
Along a streamline,
Streamline flow is more likely for liquids with ______.
Which of the following diagrams (Figure) does not represent a streamline flow?
Streamline flow is more likely for liquids with ______.
- high density.
- high viscosity.
- low density.
- low viscosity.
