NEET PYQs for Mechanical Properties of Fluid with Solutions: Practice NEET Previous Year Questions

Updated on - Jan 19, 2026

Mechanical Properties of Fluid is an important topic in the Physics section in NEET exam. Practising this topic will increase your score overall and make your conceptual grip on NEET exam stronger.

This article gives you a full set of NEET PYQs for Mechanical Properties of Fluid with explanations for effective preparation. Practice of NEET Physics PYQs including Mechanical Properties of Fluid questions regularly will improve accuracy, speed, and confidence in the NEET 2026 exam.

NEET PYQs for Mechanical Properties of Fluid with Solutions

1.
A small hole of area of cross-section $2 \,mm^2$ is present near the bottom of a fully filled open tank of height $2 \,m$. Taking $g = 10 \,m/s^{-2}$. the rate of flow of water through the open hole would be nearly:
- $2.23 \times 10^{-6}m^3/s^{-1}$
- $6.4 \times 10^{-6}m^3/s^{-1}$
- $12.6 \times 10^{-6}m^3/s^{-1}$
- $8.9 \times 10^{-6}m^3/s^{-1}$
View Solution
2.
A rectangular film of liquid is extended from $(4 \, cm \times 2\, cm)$ to $ (5 \, cm \times 4 \, cm)$. If the work done is $3 \times 10^{-4} \, J$, the value of the surface tension of the liquid is -
- $0.250 \, N m^{-1}$
- $0.125 \, N m^{-1}$
- $0.2 \, N m^{-1}$
- $8.0\, N m^{-1}$
View Solution
3.
The velocity of a small ball of mass M and density d, when dropped in a container filled with glycerine becomes constant after some time. If the density of glycerine is $\frac{d}{2}$, then the viscous force acting on the ball will be
- 2Mg
- $\frac{Mg}{2}$
- Mg
- $\frac{3}{2}Mg$
View Solution
4.
Water rises to a height $h$ in capillary tube. If the length of capillary tube above the surface of water is made less than $h$, then
- water rises upto a point a little below the top and stays there.
- water does not rise at all.
- water rises upto the tip of capillary tube and then starts overflowing like a fountain.
- water rises upto the top of capillary tube and stays there without overflowing.
View Solution
5.
A fluid is in streamline flow across a horizontal pipe of variable area of cross section. For this which of the following statements is correct?
- The velocity is maximum at the narrowest part of the pipe and pressure is maximum at the widest part of the pipe.
- Velocity and pressure both are maximum at the narrowest part of the pipe.
- Velocity and pressure both are maximum at the widest part of the pipe.
- The velocity is minimum at the narrowest part of the pipe and the pressure is minimum at the widest part of the pipe.
View Solution
6.
A spherical ball is dropped in a long column of a highly viscous liquid. The curve in the graph shown, which represents the speed of the ball (v) as a function of time (t) is:
- A
- B
- C
- D
View Solution
7.
A small sphere of radius $'r'$ falls from rest in a viscous liquid. As a result, heat is produced due to viscous force. The rate of production of heat when the sphere attains its terminal velocity, is proportional to
- $r^4$
- $r^3$
- $r^5$
- $r^2$
View Solution
8.
The amount of energy required to form a soap bubble of radius 2 cm from a soap solution is nearly: (surface tension of soap solution = 0.03 Nm^-1)
- 50.1 x 10^-4 J
- 30.16 x 10^-4 J
- 5.06 x 10^-4 J
- 3.01 x 10^-4 J
View Solution
9.
The cylindrical tube of a spray pump has radius $R$, one end of which has $n$ fine holes, each of radius $r$. If the speed of the liquid in the tube is $V$, the speed of the ejection of the liquid through the holes is
- $\frac{VR^2}{n^3 r^2}$
- $\frac{V ^2 R}{n r}$
- $\frac{VR^2}{n^2 r^2}$
- $\frac{VR^2}{n r^2}$
View Solution
10.
A soap bubble, having radius of $1 mm$, is blown from a detergent solution having a surface tension of $2.5 \times 10^{-2} N / m$. The pressure inside the bubble equals at a point $Z _{0}$ below the free surface of water in a container. Taking $g = 1 0 m / s ^{2}$, density of water $= 1 0 ^{3} kg / m ^{3}$, the value of $Z _{0}$ is:
- 1 cm
- 0.5 cm
- 100 cm
- 10 cm
View Solution
11.
If a soap bubble expands, the pressure inside the bubble:
- decreases
- decreases
- remains the same
- In equal to the atmospheric pressure
View Solution
12.
A certain number of spherical drops of a liquid of radius $r$ coalesce to form a single drop of radius $R$ and volume $V$. If $T$ is the surface tension of the liquid, then
- energy = $ 4VT \bigg( \frac{1}{r} - \frac{1}{R} \bigg) $ is released
- energy = $ 3VT \bigg( \frac{1}{r} + \frac{1}{R} \bigg) $ is absorbed
- energy = $ 3VT \bigg( \frac{1}{r} - \frac{1}{R} \bigg) $ is released
- energy is neither released nor absorbed.
View Solution
13.
A rectangular block of mass m and area of cross-section A floats in a liquid of density $\rho$ . If it is given a small vertical displacement from equilibrium it undergoes oscillation with a time period T. Then :
- T $\propto$ $\sqrt \rho$
- T $\propto$ $\bigg(\frac{1}{\sqrt A}\bigg)$
- T $\propto\bigg(\frac{1}{\rho}\bigg)$
- T $\propto\bigg(\frac{1}{\sqrt m}\bigg)$
View Solution

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NEET PYQs for Mechanical Properties of Fluid with Solutions: Practice NEET Previous Year Questions

NEET PYQs for Mechanical Properties of Fluid with Solutions

1.
A small hole of area of cross-section $2 \,mm^2$ is present near the bottom of a fully filled open tank of height $2 \,m$. Taking $g = 10 \,m/s^{-2}$. the rate of flow of water through the open hole would be nearly:

2.
A rectangular film of liquid is extended from $(4 \, cm \times 2\, cm)$ to $ (5 \, cm \times 4 \, cm)$. If the work done is $3 \times 10^{-4} \, J$, the value of the surface tension of the liquid is -

3.
The velocity of a small ball of mass M and density d, when dropped in a container filled with glycerine becomes constant after some time. If the density of glycerine is \(\frac{d}{2}\), then the viscous force acting on the ball will be

4.
Water rises to a height $h$ in capillary tube. If the length of capillary tube above the surface of water is made less than $h$, then

5.
A fluid is in streamline flow across a horizontal pipe of variable area of cross section. For this which of the following statements is correct?

6.
A spherical ball is dropped in a long column of a highly viscous liquid. The curve in the graph shown, which represents the speed of the ball (v) as a function of time (t) is:

7.
A small sphere of radius $'r'$ falls from rest in a viscous liquid. As a result, heat is produced due to viscous force. The rate of production of heat when the sphere attains its terminal velocity, is proportional to

8.
The amount of energy required to form a soap bubble of radius 2 cm from a soap solution is nearly: (surface tension of soap solution = 0.03 Nm^-1)

9.
The cylindrical tube of a spray pump has radius $R$, one end of which has $n$ fine holes, each of radius $r$. If the speed of the liquid in the tube is $V$, the speed of the ejection of the liquid through the holes is

11.
If a soap bubble expands, the pressure inside the bubble:

12.
A certain number of spherical drops of a liquid of radius $r$ coalesce to form a single drop of radius $R$ and volume $V$. If $T$ is the surface tension of the liquid, then

13.
A rectangular block of mass m and area of cross-section A floats in a liquid of density \(\rho\) . If it is given a small vertical displacement from equilibrium it undergoes oscillation with a time period T. Then :

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NEET PYQs for Mechanical Properties of Fluid with Solutions

1.A small hole of area of cross-section $2 \,mm^2$ is present near the bottom of a fully filled open tank of height $2 \,m$. Taking $g = 10 \,m/s^{-2}$. the rate of flow of water through the open hole would be nearly:

2.A rectangular film of liquid is extended from $(4 \, cm \times 2\, cm)$ to $ (5 \, cm \times 4 \, cm)$. If the work done is $3 \times 10^{-4} \, J$, the value of the surface tension of the liquid is -

3.The velocity of a small ball of mass M and density d, when dropped in a container filled with glycerine becomes constant after some time. If the density of glycerine is \(\frac{d}{2}\), then the viscous force acting on the ball will be

4.Water rises to a height $h$ in capillary tube. If the length of capillary tube above the surface of water is made less than $h$, then

5.A fluid is in streamline flow across a horizontal pipe of variable area of cross section. For this which of the following statements is correct?

6.A spherical ball is dropped in a long column of a highly viscous liquid. The curve in the graph shown, which represents the speed of the ball (v) as a function of time (t) is:

7.A small sphere of radius $'r'$ falls from rest in a viscous liquid. As a result, heat is produced due to viscous force. The rate of production of heat when the sphere attains its terminal velocity, is proportional to

8.The amount of energy required to form a soap bubble of radius 2 cm from a soap solution is nearly: (surface tension of soap solution = 0.03 Nm-1)

9.The cylindrical tube of a spray pump has radius $R$, one end of which has $n$ fine holes, each of radius $r$. If the speed of the liquid in the tube is $V$, the speed of the ejection of the liquid through the holes is

11.If a soap bubble expands, the pressure inside the bubble:

12.A certain number of spherical drops of a liquid of radius $r$ coalesce to form a single drop of radius $R$ and volume $V$. If $T$ is the surface tension of the liquid, then

13.A rectangular block of mass m and area of cross-section A floats in a liquid of density \(\rho\) . If it is given a small vertical displacement from equilibrium it undergoes oscillation with a time period T. Then :

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1.
A small hole of area of cross-section $2 \,mm^2$ is present near the bottom of a fully filled open tank of height $2 \,m$. Taking $g = 10 \,m/s^{-2}$. the rate of flow of water through the open hole would be nearly:

2.
A rectangular film of liquid is extended from $(4 \, cm \times 2\, cm)$ to $ (5 \, cm \times 4 \, cm)$. If the work done is $3 \times 10^{-4} \, J$, the value of the surface tension of the liquid is -

3.
The velocity of a small ball of mass M and density d, when dropped in a container filled with glycerine becomes constant after some time. If the density of glycerine is \(\frac{d}{2}\), then the viscous force acting on the ball will be

4.
Water rises to a height $h$ in capillary tube. If the length of capillary tube above the surface of water is made less than $h$, then

5.
A fluid is in streamline flow across a horizontal pipe of variable area of cross section. For this which of the following statements is correct?

6.
A spherical ball is dropped in a long column of a highly viscous liquid. The curve in the graph shown, which represents the speed of the ball (v) as a function of time (t) is:

7.
A small sphere of radius $'r'$ falls from rest in a viscous liquid. As a result, heat is produced due to viscous force. The rate of production of heat when the sphere attains its terminal velocity, is proportional to

8.
The amount of energy required to form a soap bubble of radius 2 cm from a soap solution is nearly: (surface tension of soap solution = 0.03 Nm^-1)

9.
The cylindrical tube of a spray pump has radius $R$, one end of which has $n$ fine holes, each of radius $r$. If the speed of the liquid in the tube is $V$, the speed of the ejection of the liquid through the holes is

11.
If a soap bubble expands, the pressure inside the bubble:

12.
A certain number of spherical drops of a liquid of radius $r$ coalesce to form a single drop of radius $R$ and volume $V$. If $T$ is the surface tension of the liquid, then

13.
A rectangular block of mass m and area of cross-section A floats in a liquid of density \(\rho\) . If it is given a small vertical displacement from equilibrium it undergoes oscillation with a time period T. Then :