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Question
Explain why When we try to close a water tap with our fingers, fast jets of water gush through the openings between our fingers
Solution 1
By doing so the area of outlet of water jet is reduced, so velocity of water increases according to equation of continuity av = constant.
Solution 2
According to the equation of continuity:
Area × Velocity = Constant
For a smaller opening, the velocity of flow of a fluid is greater than it is when the opening is bigger. When we try to close a tap of water with our fingers, fast jets of water gush through the openings between our fingers. This is because very small openings are left for the water to flow out of the pipe. Hence, area and velocity are inversely proportional to each other.
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