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Fluid Mechanics

JEE Main level, single correct, medium

52 of 192

Question 52 of 192

Correct Bernoulli's equation is (symbols have their usual meaning) :

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Answer: (B) $P+\rho g h+\frac{1}{2} \rho v^2=$ constant

\mathrm{P}+\rho \mathrm{gh}+\frac{1}{2} \rho \mathrm{V}^2=

constant

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JEE Main 2025 Apr 2 Shift 1 question paper

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More Physics practice

Fluid MechanicsWater flows through a horizontal pipe of non-uniform cross-section. At point $A$ the velocity is $2\,\text{m/s}$ and pressure is $P_A$ . At point $B$ , where diameter is halved, velocity is:
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Fluid MechanicsWater flows out of a small hole of area $a$ at the base of a large cylindrical tank of cross-sectional area $A$ filled to height $H$ . Time taken to empty the tank completely is:
Fluid MechanicsA spherical ball of radius $r$ falls with terminal velocity $v$ in a viscous liquid. The viscous drag force acting on the ball is proportional to:
Fluid MechanicsAn air bubble of volume $2.9 \mathrm{~cm}^{3}$ rises from the bottom of a swimming pool of 5 m deep. At the bottom of the pool water temperature is $17^{\circ} \mathrm{C}$ . The volume of the bubble when it reaches the surface, where the water temperature is $27^{\circ} \mathrm{C}$ , is $\_\_\_\_$ $\mathrm{cm}^{3}$ .
$\left(\mathrm{g}=10 \mathrm{~m} / \mathrm{s}^{2}\right.$ , density of water $=10^{3} \mathrm{~kg} / \mathrm{m}^{3}$ , and 1 atm pressure is $\left.10^{5} \mathrm{~Pa}\right)$
Fluid MechanicsA plane is in level flight at constant speed and each of its two wings has an area of $40{m}^{2}.$ If the speed of the air is $180km{h}^{-1}$ over the lower wing surface and $252km{h}^{-1}$ over the upper wing surface, the mass of the plane is ________ $kg.$ (Take air density to be $1kg{m}^{–3}$ and $g=10m{s}^{–2}$ )

JEE Main Physics practice question on Fluid Mechanics (Hydrodynamics), with the answer and a step-by-step solution. Scan a question from your own book or paper to get a whiteboard video.