The cylindrical tube of a spray pump has a radius $$R,$$ one end of which has $$n$$ fine holes, each of radius $$r.$$ If the speed of the liquid in the tube is $$v,$$ the speed of the ejection of the liquid through the holes is:

 1 $$\frac{vR^{2}}{n^{2}r^{2}}$$ 2 $$\frac{vR^{2}}{nr^{2}}$$ 3 $$\frac{vR^{2}}{n^{3}r^{2}}$$ 4 $$\frac{v^{2}R}{nr}$$
Subtopic: Â Equation of Continuity |
Â 77%
From NCERT
NEET - 2015
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A fluid is in streamline flow across of a horizontal pipe of the variable area of cross-section. For this which of the following statements is correct?
 1 the velocity is maximum at the narrowest part of the pipe and pressure is maximum at the widest part of the pipe. 2 velocity and pressure both are maximum at the narrowest part of the pipe. 3 velocity and pressure both are maximum at the widest part of the pipe. 4 the velocity is minimum at the narrowest part of the pipe and the pressure is minimum at the widest part of the pipe.
Subtopic: Â Equation of Continuity |
Â 67%
From NCERT
NEET - 2013