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PhysicsFluidBernoulli's theorem and applicationsEasy2 minPYQ_2011

PhysicsEasysingle choice

Water is flowing continuously from a tap having an internal diameter $8 \times 1 0^{- 3} m$ . The water velocity as it leaves the tap is $0.4 ms^{- 1}$ . The diameter of the water stream at a distance $2 \times 1 0^{- 1} m$ below the lap is close to :

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Answer:

Solution:

Equation of continuity $\Rightarrow (a \times v) top = (a \times v) bottom v_{b}^{2} - (0.4)^{2} = 2 \times 9.8 \times 0.2 [v^{2} - u^{2} = 2 gh is used] v_{b} = 2 m / s (nearly) π [8 \times 1 0^{- 3}] \times 0.4 = π d^{2} \times 4 d \approx 3.6 \times 1 0^{- 3} m$

Stream:JEESubject:PhysicsTopic:FluidSubtopic:Bernoulli's theorem and applications

⏱ 2mℹ️ Source: PYQ_2011

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