Question

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 energy 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 1

Answer: (C), (D)

The momenta of all the particles arriving at a given point are the same.

In the case of steady flow, all the particles passing through a given point follow the same path and we have a unique line of flow passing through a given point called as streamline.
Hence all the particles reaching a given point must have same velocity which in turn means same kinetic energy and momenta. Hence (c)& (d)