From the given diagram, what is the velocity \(v_3?\)
1. \(4\) m/s
2. \(3\) m/s
3. \(1\) m/s
4. \(2\) m/s
In a horizontal pipe of non-uniform cross-section, water flows with a velocity of 1 m s at a point where the diameter of the pipe is 20 cm. The velocity of water (m s) at a point where the diameter of the pipe is 5 cm is:
1. 8
2. 16
3. 24
4. 32
An incompressible fluid flows steadily through a cylindrical pipe which has a radius 2r at point A and a radius r at B further along the flow direction. If the velocity at point A is v, its velocity at point B is:
1. 2v
2. v
3. v/2
4. 4v
The cylindrical tube of a spray pump has radius R, one end of which has n fine holes, each of radius r. If the speed of the liquid in the tube is v, then the speed of ejection of the liquid through the holes will be:
1. vR2/n2r2
2. vR2/nr2
3. vR2/n3r2
4. v2R/nr