Fluid Mechanics PYQs - Last 5 Years
COMEDK / Physics / Mechanics / 16 recent questions
PhysicsMechanics2022-2026
Practice 16 COMEDK Physics questions from Fluid Mechanics. Use the year-wise and type-wise breakdown to prioritize recent PYQs, then continue into the question list below.
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Last 5 Years Fluid Mechanics Questions
Showing 16 of 16 filtered questions.
1Fluid Mechanics
A small hollow vessel which has a small circular hole of radius $r$ in its base, is immersed in a tank of oil of density $\rho$ and surface tension $T$. The oil will penetrate into the vessel at a depth of
MCQ+1 / -02026
2Fluid Mechanics
Calculate the vapour pressure that can help the formation of a spherical droplet of water of radius $6.25 \times 10^{-5} \mathrm{~m}$ at $22^{\circ} \mathrm{C}$. Given: The surface tension of water at the given temperature is $7.28 \times 1...
MCQ+1 / -02026
3Fluid Mechanics
A cylindrical tank 0.5 m in radius, rests on a platform 1.5 m high. Initially the tank is filled with water to a height of 2.5 m . A small plug whose area is $10^{-4} \mathrm{~m}^2$ is removed from an orifice located on the side of the tank...
MCQ+1 / -02025
4Fluid Mechanics
In to a vessel containing pure water a clean glass tube of radius $3.6 \times 10^{-4} \mathrm{~m}$ is held vertically with 12 cm of the tube above the water level. Now the capillary tube is moved down in to the water so that only 2 cm of it...
MCQ+1 / -02025
5Fluid Mechanics
A wind mill converts a fixed fraction of the wind energy intercepted by its blades into electrical energy. The electrical power output P is related to the velocity of wind v as
MCQ+1 / -02025
6Fluid Mechanics
Water from a tap emerges vertically downwards with an initial speed of $1.0 \mathrm{~ms}^{-1}$. The cross-sectional area of the tap is $1 \mathrm{~cm}^2$. Assume that the pressure is constant throughout the stream of water and that the flow...
MCQ+1 / -02025
7Fluid Mechanics
64 rain drops of the same radius are falling through air with a steady velocity of \(0.5 \mathrm{~cm} \mathrm{~s}^{-1}\). If the drops coalesce, the terminal velocity would be
MCQ+1 / -02024
8Fluid Mechanics
What is the relation obeyed by the angles of contact \(\theta_1, \theta_2\) and \(\theta_3\) of 3 liquids of different densities \(P_1, P_2\) and \(P_3\) respectively \((\mathrm{P}_1 < \mathrm{P}_2 < \mathrm{P}_3\)) when they rise to the sa...
MCQ+1 / -02024
9Fluid Mechanics
Modulus of rigidity of an incompressible liquid is
MCQ+1 / -02024
10Fluid Mechanics
Water flows from a tap with steady flow, through a cross sectional area of \(10^{-3} \mathrm{~m}^2\) with a speed of \(0.5 \mathrm{~ms}^{-1}\). Assume the pressure is constant throughout the stream of water. The cross sectional area of the ...
MCQ+1 / -02024
11Fluid Mechanics
Water from a tap of cross-sectional area \(1 \mathrm{~cm}^2\), falls vertically downwards at \(2 \mathrm{~m} / \mathrm{s}\). The cross sectional area of the stream, \(20 \mathrm{~cm}\) below the tap is (assume that pressure is constant thro...
MCQ+1 / -02023
12Fluid Mechanics
The speeds of air-flow on the upper and lower surfaces of a wing of an aeroplane are \(v_1\) and \(v_2\), respectively. If \(A\) is the cross-sectional area of the wing and \(\rho\) is the density of air, then the upward lift is
MCQ+1 / -02023
13Fluid Mechanics
A balloon with mass $m$ is descending down with an acceleration \(a\) (where, \(a < g\) ). How much mass should be removed from it so that it starts moving up with an acceleration \(a\) ?
MCQ+1 / -02023
14Fluid Mechanics
A block of wood floats in water with \((4 / 5)\) th of its volume submerged. If the same block just floats in a liquid, the density of the liquid is (in \(\mathrm{kgm}^{-3}\))
MCQ+1 / -02023
15Fluid Mechanics
Water is poured in a tank through a cylindrical tube of area of cross-section A and ejecting water at a constant speed 4 m/s. the tank contains a hole of area \(\frac{A}{2}\) at bottom. Level of water in the tank will not go up beyond
MCQ+1 / -02022
16Fluid Mechanics
A raft of density 600 g/m\(^3\) and mass 120 kg floats in water. How much weight can be put on the raft to make it just sink?
MCQ+1 / -02022