Q15 of 81 Page 270

While watering a distant plant, a gardener partially closes the exit hole of the pipe by putting his finger on it. Explain why this results in the water stream going to a larger distance.

The equation of continuity is


Here, the gardener is reducing the cross-sectional area, thus to maintain continuity, the velocity of the liquid increases and it goes to farther lengths.


More from this chapter

All 81 →
13

A ferry boat loaded with rocks has to pass under a bridge. The maximum height of the rocks is slightly more than the height of the bridge so that the boat just fails to pass under the bridge. Should some of the rocks be removed or some more rocks be added?

 14

Water is slowly coming out from a vertical pipe. As the water descends after coming out, its area of cross section reduces. Explain this on the basis of the equation of continuity.

 16

A Gipsy car has a canvass top. When the car runs at high speed, the top bulges out. Explain.

 1

A liquid can easily change its shape but a solid cannot because