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Physics - Fluid Question with Solution | TestHub

PhysicsFluidBernoulli's theorem and applicationsEasy2 minPYQ_2026

PhysicsEasysingle choice

An in-compressible fluid flows steadily through a horizontal cylindrical pipe. The pipe has radius ' $3 R$ ' at point A and ' $1.5 R$ ' at point B, further along the flow direction at the same level. If the velocity at point A is ' $v$ ', then that at point B is

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Answer:

Solution:

Using the equation of continuity for an incompressible fluid:

$A_{A} v_{A} = A_{B} v_{B}$

$π (3 R)^{2} v = π (1.5 R)^{2} v_{B}$

$9 π R^{2} v = 2.25 π R^{2} v_{B}$

$v_{B} = \frac{9}{2.25} v = 4 v$

Answer: $4 v$

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

⏱ 2mℹ️ Source: PYQ_2026

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