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Mechanical Properties of Fluids — Physics STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 SciencePhysicsMechanical Properties of Fluids1 Mark
MCQ
Along a streamline:
  • A
    The velocity of a fluid particle remains constant.
  • ✓
    The velocity of all fluid particles crossing a given position is constant.
  • C
    The velocity of all fluid particles at a given instant is constant.
  • D
    The speed of a fluid particle remains constant.
✓

Answer

Correct option: B.
The velocity of all fluid particles crossing a given position is constant.
As discussed above for a streamline flow of a liquid velocity of each particle at a particular cross$-$section is constant, because $Av=$ constant $($law of continuity$)$ between two cross$-$section 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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