Fluid Mechanics PYQs - Last 5 Years

AP EAPCET / Physics / Mechanics / 35 recent questions

PhysicsMechanics2021-2025

All Fluid Mechanics PYQs Last 10 Years Create chapter test

Practice 35 AP EAPCET Physics questions from Fluid Mechanics. Use the year-wise and type-wise breakdown to prioritize recent PYQs, then continue into the question list below.

35

PYQs on Page

Physics / Mechanics

2021-2025

Year Range

Based on indexed question metadata

35

Last 5 Years

2021-2025

35

Last 10 Years

2016-2025

Recent Year Trend

2021

2022

2023

2024

2025

202111 max PYQs/year2025

Question Types

35PYQs

MCQ100%

Difficulty Mix

#1 Unknown35

35 in last 5 years35 in last 10 years

Last 5 Years Fluid Mechanics Questions

Showing 35 of 35 filtered questions.

1Fluid Mechanics

If two soap bubbles each of radius 2 cm combine in vacuum under isothermal conditions, then the radius of the new bubble formed is

2Fluid Mechanics

A wire of length 20 cm is placed horizontally on the surface of water and is gently pulled up with a force of $1.456 \times 10^{-2} \mathrm{~N}$ to keep the wire in equilibrium. The surface tension of water is

3Fluid Mechanics

When the temperature increases, the viscosity of

4Fluid Mechanics

In a water tank, an air bubble rises from the bottom to the top surface of the water. If the depth of the water in the tank is 7.28 m and atmospheric pressure is 10 m of water, then the ratio of the radii of the bubble at the bottom of the ...

5Fluid Mechanics

A mercury drop of radius 1 cm is divided into $10^6$ droplets of equal size. If surface tension of mercury is $35 \times 10^{-3} \mathrm{Nm}^{-1}$, then the change in surface energy in the process is

6Fluid Mechanics

Water flowing through a pipe of area of cross-section $2 \times 10^{-3} \mathrm{~m}^2$ hits a vertical wall horizontally with a velocity of $12 \mathrm{~ms}^{-1}$. If the water does not rebound after hitting the wall, then the force acting ...

7Fluid Mechanics

If two soap bubbles $A$ and $B$ of radii $r_1$ and $r_2$ respectively are kept in vacuum at constant temperature, then the ratio of masses of air inside the bubbles $A$ and $B$ is

8Fluid Mechanics

In a hydraulic lift, if the radius of the smaller piston is 5 cm and the radius of the larger piston is 50 cm , then the weight that the larger piston can support when a force of 250 N is applied to the smaller piston is

9Fluid Mechanics

An aeroplane of mass $4.5 \times 10^4 \mathrm{~kg}$ and total wing area of $600 \mathrm{~m}^2$ is travelling at a constant height. The pressure difference between the upper and lower surfaces of its wings is (Acceleration due to gravity $=1...

10Fluid Mechanics

A liquid drop of diameter $D$ splits into 3375 small identical drops. If $S$ is the surface tension of the liquid, then the change in the surface energy in the process is

11Fluid Mechanics

If water flows with a velocity of $20 \mathrm{cms}^{-1}$ in a pipe of radius 2 cm , then the flow is (The coefficient of viscosity of water is $10^{-3} \mathrm{~kg} \mathrm{~m}^{-1} \mathrm{~s}^{-1}$ and density of water is $10^3 \mathrm{~k...

12Fluid Mechanics

Water flows from a tap of diameter 1.5 cm with $75 \times 10^{-5} \mathrm{~m}^3 \mathrm{~s}^{-1}$. Coefficient of viscosity of water is $10^{-3} \mathrm{~Pa}$. The flow is

13Fluid Mechanics

Water is flowing in streamline manner in a horizontal pipe. If the pressure at a point where cross-sectional area is $10 \mathrm{~cm}^2$ and velocity $1 \mathrm{~ms}^{-1}$ is 2000 Pa , then the pressure of water at another point where the c...

14Fluid Mechanics

Two cylindrical vessels $A$ and $B$ of different areas of cross-section kept on same horizontal plane are filled with water to the same height. If the volume of water in vessel $A$ is 3 times the volume of water in vessel $B$, then the rati...

15Fluid Mechanics

A large tank filled water to a height $h$ is to be emptied through a small hole at the bottom. The ratio of the time taken for the level to fall from $h$ to $\frac{h}{2}$ and that taken for the level to fall from $\frac{h}{2}$ to 0 is

16Fluid Mechanics

A spherical ball of radius $1 \times 10^{-4} \mathrm{~m}$ and of density $10^4 \mathrm{kgm}^{-3}$ falls freely under gravity through a distance $h$ before entering a tank of water. After entering water if the velocity of the ball does not c...

17Fluid Mechanics

The radius of cross-section of the cylindrical tube of a spray pump is 2 cm . One end of the pump has 50 fine holes each of radius 0.4 mm . If the speed of flow of the liquid inside the tube is $0.04 \mathrm{~ms}^{-2}$. The speed of ejectio...

18Fluid Mechanics

Depth of a river is 100 m magnitude of compressibility of the water is $05 \times 10^{-9} \mathrm{~N}^{-1} \mathrm{~m}^2$. The fractional compression in water at the bottom of the river is (acceleration due to gravity $=10 \mathrm{~m} / \ma...

19Fluid Mechanics

Two mercury drops, each with same radius $r$ merged to form a bigger drop. $T$ is the surface tension of single drop, then the surface energy of bigger drop is given by

20Fluid Mechanics

If $S_1, S_2$ and $S_3$ are the tensions at liquid-air, solid-air and solid-liquid interfaces respectively and $\theta$ is the angle of contact at the solid-liquid interface, then

21Fluid Mechanics

216 small identical liquid drops each of surface area $A$ coalesce to form a bigger drop. If the surface tension of the liquid is $T$. The energy released in the process is

22Fluid Mechanics

A person of height 1.65 m is standing upright. The additional external force required by blood vessel of length 1 cm , diameter 1 mm at feet to balance the pressure compared to similar blood vessel in head is (Density of blood $=1.1 \times ...

23Fluid Mechanics

The gauge pressure at a depth of 50 m in a sea is (Density of sea water is $1025 \mathrm{~kg} \mathrm{~m}^{-3}$ and $g=10 \mathrm{~ms}^{-2}$ )

24Fluid Mechanics

A hydraulic lift is shown in the figure. The movable pistons \(A, B\) and \(C\) are of radius \(10 \mathrm{~cm}, 100 \mathrm{~m}\) and 5 cm respectively. If a body of mass 2 kg is placed on piston \(A\), the maximum masses that can be lifte...

25Fluid Mechanics

Statement (A) When the temperature increases the viscosity of gases increases and the viscosity of liquids decreases.
Statement (B) Water does not wet an oily glass because cohesive force of oil is less than that of water.
Statement (C) A l...

26Fluid Mechanics

A steady flow of a liquid of density \(\rho\) is shown in figure. At point 1, the area of cross-section is \(2 A\) and the speed of flow of liquid is \(\sqrt{2} \mathrm{~ms}^{-1}\). At point 2 , the area of cross-section is \(A\). Between t...

27Fluid Mechanics

In a \(U\)-shaped tube the radius of one limb is 2 mm and that of other limb is 4 mm . A liquid of surface tension \(0.03 \mathrm{~Nm}^{-1}\), density \(1500 \mathrm{~kg} \mathrm{~m}^{-3}\) and angle of contact zero is taken in the tube. Th...

28Fluid Mechanics

In a hydraulic lift, compressed air exerts a force \(F\) on a small piston of radius 3 cm . Due to this pressure the second piston of radius 5 cm lifts a load of 1875 kg . The value of \(F\) is (Acceleration due to gravity $$=10 \mathrm{~ms...

29Fluid Mechanics

Water does not wet an oily glass because

30Fluid Mechanics

A glass flask weighting 390 g, having internal
volume 500 cc just floats when half of it is
filled with water. Specific gravity of the glass
is

31Fluid Mechanics

Assertion (A) The upper surface of the wing of an aeroplane is made convex and the lower surface is made concave.
Reason (R) The air currents at the top have smaller velocity and thus less pressure at the bottom than at the top.

32Fluid Mechanics

What causes the free surface of a liquid to
have minimum area?

33Fluid Mechanics

An ideal liquid flows through a horizontal
tube of variable diameter. The pressure is
lowest where the

34Fluid Mechanics

The lower end of a capillary tube is dipped
into water and it is observed that the water
in capillary tube rises by 7.5 cm. Find the
radius of the capillary tube used, if surface
tension of water is 7.5 \(\times\) 10\(^{-2}\) Nm\(^{-1}\). A...

35Fluid Mechanics

Identify the incorrect statement regarding Reynold's number \(\left(R_e\right)\).