Q. 5

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.

Answer :

In a streamline flow, the speed of the particle can change if the area of cross-section of the flow changes. Therefore, option (A) is incorrect. From the same line of reasoning, option (B) is also incorrect.

For the particles arriving at a point, the velocities are same. Therefore, their kinetic energies and momenta are also same. Option (C) and (D) are correct for streamline flow of incompressible liquids.

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