CBSE Class 11 Physics Mechanical Properties Of Fluids Worksheet Set 02

Read and download the CBSE Class 11 Physics Mechanical Properties Of Fluids Worksheet Set 02 in PDF format. We have provided exhaustive and printable Class 11 Physics worksheets for Chapter 9 Mechanical Properties Of Fluids, designed by expert teachers. These resources align with the 2026-27 syllabus and examination patterns issued by NCERT, CBSE, and KVS, helping students master all important chapter topics.

Worksheet Collection: Class 11 Physics Chapter 9 Mechanical Properties Of Fluids

Check out this Physics practice paper designed for Class 11 learners. Working through these problems for Chapter 9 Mechanical Properties Of Fluids, along with the provided solutions, makes self-evaluation easy and helps you secure top marks in school exams and final tests.

Class 11 Physics Chapter 9 Mechanical Properties Of Fluids Practice Sheet

Question- An ornament weighing 36 g in air weighs only 34 g in water. Assuming that some copper is mixed with gold to prepare the ornament, find the amount of copper in it. Specific gravity of gold is 19.3 and that of copper is 8.9.

(a) 2.2 g
(b) 4.4 g
(c) 1.1 g
(d) 3.6 g
Ans-(a) 
 
Question- A large block of ice 5m thick has a vertical hole drilled through it and is floating in the middle of a lake. The minimum length of the rope required to scoop up bucket full of water through the hole is (the relative density of ice = 0.9)
(a) 1 m
(b) 0.9 m
(c) 0.5 m
(d) 0.45 m
Ans- (c)
 
Question- In a cylindrical water tank there are two small holes Q and P on the wall at a depth of h1 form upper level of water and at a height of h2 from the lower end of the tank respectively as shown in the figure. Water coming out from both the holes strike the ground at the same point. The ratio of h1 and h2 is
(a) 1
(b) 2
(c) > 1
(d) < 1
Ans- (a)
 
Question-Tanks A and B open at the top contain two different liquids upto certain height in them. A hole is made to the wall of each tank at a depth ‘h’ from the surface of the liquid. The area of the hole in A is twice that of in B. If the liquid mass flux through each hole is equal, then the ratio of the densities of the liquids respectively, is
(a) 2/1
(b) 3/2
(c) 2/3
(d) 1/2
Ans-(d) 
 
Question- A capillary tube is immersed vertically in water and the height of the water column is x. When this arrangement is taken into a mine of depth d, the height of the water column is y. If R is the radius of the earth, the ratio x/y is
(a) (1 – d/R)
(b) (1 + d/R)
(c) (R – d/R + d)
(d) (R + d/R – d)
Ans- (a)
 
Question-A tiny sphere of mass m nad density x is dropped in a tall jar of glycerine of density y. When the sphere acquires terminal velocity, the magnitude of the viscious force acting on it is
(a) mgx/y
(b) mgy/x
(c) mg (1 – y/x)
(d) mg (1 + x/y)
Ans- (c)
 
Question-A tank with a square base of area 2.0 m2 is divided into two compartments by a vertical partition in the middle. There is a small hinged door of face area 20 cm2 at the bottom of the partition. Water is filled in one compartment and an acid of relative density 1.5 in the other, both to a height of 4 m. If g = 10 ms–2, the force necessary to keep the door closed is
(a) 10 N
(b) 20 N
(c) 40 N
(d) 80 N
Ans-(c)  
 
Question-Length of exposed portion of top of box is equal to -
(a) 2m
(b) 3m
(c) 4m
(d) 2.5 m
Ans- (c)
 
Question-Water pressure at the bottom of centre of box is equal to (atmospheric pressure = 10-5 N/m2  , density of water = 1000 kg /m3 , g =10 m/ sec2 )
(a) 1.1 MPa
(b) 0.11 MPa
(c) 0.101 MPa
(d) 0.011 MPa
Ans- (b)
 
Question-Maximum value of water pressure in the box is equal to -
(a) 1.4 MPa
(b) 0.14 MPa
(c) 0.104 MPa
(d) 0.014 MPa
Ans- (b)
 
Question-What is the value of vertical acceleration of box for given horizontal acceleration (g/2), so that no part of bottom of box is exposed -
(a) g/2 upward
(b) g/2 downward
(c) g/4 upward
(d) not possible
Ans- (a)

Question- It is equidistant from the two stationary plates then the force exerted by the liquid on the plate is approximately :

(a) 0.53 N
(b) 0.26 N
(c) 0.72 N
(d) zero
Ans-(a)
 
Question-If the thin plate moves such that the plate is at a distance of 2 cm from one of the plates and 4 cm from the other, now the force exerted by the luqid on the plate is :
(a) 0.6 N
(b) 0.4/3 N
(c) 1.6/3 N
(d) None
Ans-(a)
 
Question- The net force on the glass window due to fluid pressure on both sides is
(a) πkN
(b) 2πkN
(c) π N
(d) 2π N
Ans-(b)
 
Question- The net force on the wall due to fluid pressure on both sides is
(a) 44000 kN
(b) 12100 kN
(c) 24200 kN
(d) 48400 kN
Ans-(c)
 
Question- If the glass window breaks, speed of water at this instant coming out through the window is
(a) 20 m/s
(b) 6 m/s
(c) 20.2 m/s
(d) 14 m/s
Ans-(a)
 
Question-The velocity of efflux is
(a) 10 ms–1
(b) 20 ms–1
(c) 4 ms–1
(d) 35 ms–1
Ans-(c)
 
Question- Horizontal force F to keep the cylinder in static equilibrium, if it is placed on a smooth horizontal plane, is
(a) 7.2 N
(b) 10 N
(c) 15.5 N
(d) 20.4 N
Ans-(a)
 
Question- Minimum and maximum values of F to keep the cylinder in static equilibrium just after the water starts to spill through the hole, if the coefficient of static friction between contact surfaces is 0.01, are
(a) 0, 40 N
(b) 5.4 N, 52.2 N
(c) 0, 70 N
(d) 0, 52.2 N
Ans-(d)
 
Question- Find the magnitude and direction of the force exerted by the hinge on the rod.
(a) 17/3 kgf in the downward direction
(b) 8 kgf in the downward direction
(c) 4 kgf in the downward direction
(d) 5 kgf in the downward direction
Ans-(a)
 
Question- Statement I : To float, a body must displace liquid whose weight is greater than the actual weight of the body.
Statement II : The body will experience no net downward force, in the case of floating.
(a) A
(b) B
(c) C
(d) D
Ans-(c)
 
Question-Statement I : All the raindrops hit the surface of the earth with the same constant velocity.
Statement II : An object falling through a viscous medium eventually attains a terminal velocity.
(a) A
(b) B
(c) C
(d) D
Ans-(d)
 
Question- Statement I : Tiny drops of liquid resist deforming forces better than bigger drops.
Statement II : Excess pressure inside a drop is directly proportional to surface tension.
(a) A
(b) B
(c) C
(d) D
Ans-(b)
 
Question-Statement I : Pascel’s law is the working principal of a hydraulic lift.
Statement II : Pressure is equal to thrust acting per unit area.
(a) A
(b) B
(c) C
(d) D
Ans-(b)
 
Question-A closed compartment containing gas is moving with some acceleration in horizontal direction. Neglect effect of gravity. Then, the pressure in the compartment is
(a) same everywhere
(b) lower in front side
(c) lower in rear side
(d) lower in upper side
Ans-(b)
 
Question-If the piston is pushed at a speed of 5mms–1, the air comes out of the nozzle with a speed of 
(A) 0.1 ms–1
(B) 1 ms–1
(C) 2ms–1
(D) 8 ms–1
Ans-(c)

Question- In Bernoulli’s theorem which of the following is conserved?

(a) Mass

(b) Linear momentum

(c) Energy

(d) Angular momentum

Answer-(c)

 

Question-Pressure applied to enclosed fluid is

(a) increased and applied to every part of the fluid

(b) diminished and transmitted to wall of container

(c) increased in proportion to the mass of the fluid and then transmitted

(d) transmitted unchanged to every portion of the fluid and wall of containing vessel.

Answer-(d)

 

Question-The device which measures the flow speed of incompressible fluid is

(a) sphygmomanometer

(b) open-tube manometer

(c) venturimeter

(d) mercury barometer

Answer-(c)

 

Question-After terminal velocity is reached, the acceleration of a body falling through a fluid is

(a) equal to g

(b) zero

(c) less than g

(d) greater than g

Answer-(b)

 

Question- Bernoulli’s equation is important in the field of

(a) electrical circuits

(b) magnetism

(c) flow of fluids

(d) photoelectric effect

Answer-(c)

 

Question-Which of the following is a unit of pressure?

(a) atm

(b) pascal

(c) bar

(d) All of these

Answer-(d)

 

Question- Magnus effect is very near to the

(a) magnetic field

(b) electric field

(c) bernoulli’s theorem

(d) magnetic effect of current

Answer-(c)

 

Question-Liquid pressure depends upon

(a) area of the liquid surface

(b) shape of the liquid surface

(c) height of the liquid column

(d) directions

Answer-(c)

 

Question-Toricelli’s theorem is used to find

(a) the velocity of efflux through an orifice.

(b) the velocity of flow of liquid through a pipe.

(c) terminal velocity

(d) critical velocity

Answer-(a)

 

Question-According to archimedes' principle, loss of weight of a body immersed in a liquid is equal to

(a) weight of the liquid displaced

(b) weight of the total liquid

(c) weight of the body

(d) None of these

Answer-(a)

 

Question-When a body is wholly or partially immersed in a fluid at rest, the force working on it in upward direction is called

(a) buoyant force

(b) surface tension

(c) viscous force

(d) None of these

Answer-(a)

 

Question-The pressure at the bottom of a tank containing a liquid does not depend on

(a) acceleration due to gravity

(b) height of the liquid column

(c) area of the bottom surface

(d) nature of the liquid

Answer-(c)

 

Question-Beyond the critical speed, the flow of fluids becomes

(a) streamline

(b) turbulent

(c) steady

(d) very slow

Answer-(b)

 

Question-Streamline flow is more likely for liquids with

(a) high density and low viscosity

(b) low density and high viscosity

(c) high density and high viscosity

(d) low density and low viscosity

Answer-(b)

 

Question-The most characteristic property of a liquid is

(a) elasticity

(b) fluidity

(c) formlessness

(d) volume conservation

Answer-(d)

 

Question-For flow of a fluid to be turbulent

(a) fluid should have high density

(b) velocity should be large

(c) reynold number should be less than 2000

(d) both (a) and (b)

Answer-(d)

 

Question-Hydraulic lifts and hydraulic brakes are based on

(a) Archimedes' principle

(b) Bernoulli's principle

(c) Stoke's law

(d) Pascal's law

Answer-(d)

 

Question- In a stream line (laminar flow) the velocity of flow at any point in the liquid

(a) does not vary with time

(b) may vary in direction but not in magnitude

(c) may vary in magnitude but not in direction

(d) may vary both in magnitude and direction

Answer-(a)

 

Question- _________ and _________ play the same role in case of fluids as force and mass play in case of solids.

(a) Thrust and density

(b) Pressure and density

(c) Pressure and thrust

(d) thrust and volume

Answer-(b)

 

Question-Paint-gun is based on

(a) Bernoulli’s theorem

(b) Archimedes’ principle

(c) Boyle’s law

(d) Pascal’s law

Answer-(a)

 

Question-Specific gravity of a body is numerically equal to

(a) weight of the body in air

(b) weight of the body in water

(c) relative density of the body

(d) density of body in water

Answer-(c)

 

Question-A liquid is allowed to flow into a tube of truncated cone shape. Identify the correct statement from the following:

(a) the speed is high at the wider end and high at the narrow end.

(b) the speed is low at the wider end and high at the narrow end.

(c) the speed is same at both ends in a stream line flow.

(d) the liquid flows with uniform velocity in the tube.

Answer-(a)

 

Question-As the temperature of a liquid is raised, the coefficient of viscosity

(a) decreases

(b) increases

(c) remains the same

(d) may increase or decrease depending on the nature of liquid

Answer-(a)

 

Question-Which of the following pressure-measuring device measures the guage pressure?

(a) Mercury barometer

(b) Sphygmomanometer

(c) Both (a) & (b)

(d) None of these

Answer-(b)

Free study material for Physics

Physics Class 11 Curriculum Worksheets: Chapter 9 Mechanical Properties Of Fluids

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