Here we will provide you the 50+ MCQ Questions of Mechanical Properties of Fluids for NEET-UG. Mechanical Properties of Fluids is the chapter 10 in Class XI or Class 11 Physics NCERT Unit Mechanical Properties of Fluids NEET (conducted by NTA) is based on the NCERT book.
These 50+ MCQ questions are selected by the experts of studyrate.in and these are more difficult questions, which will help you to better understand Mechanical Properties of Fluids NEET MCQ Questions with Answers.
Mechanical Properties of Fluids NEET MCQ
A cube of side length L is placed in a fluid with a pressure difference of ∆P across its two opposite faces. What is the magnitude of the force exerted on the cube due to this pressure difference?
a) (∆P/L^2) x 6
b) (∆P/L^2) x 4
c) (∆P/L^2) x 2
d) (∆P/L^2) x 1
A U-shaped tube is filled with two immiscible liquids of densities ρ1 and ρ2 (ρ1 > ρ2). The height difference between the two arms of the tube is h. What is the pressure difference between the two arms of the tube?
a) (ρ1 – ρ2)gh
b) (ρ2 – ρ1)gh
c) (ρ1/ρ2)gh
d) (ρ2/ρ1)gh
A fluid flows through a pipe with a varying cross-sectional area. At a certain point in the pipe, the diameter of the pipe is halved. What happens to the velocity of the fluid at this point?
a) The velocity remains the same.
b) The velocity doubles.
c) The velocity quadruples.
d) The velocity is halved.
A fluid is flowing through a pipe. If the pipe is inclined at an angle θ with the horizontal, what is the component of the gravitational force that is acting on the fluid?
a) mg sinθ
b) mg cosθ
c) mg tanθ
d) mg cotθ
A fluid flows through a horizontal pipe with a velocity v. The pipe then splits into two pipes of equal diameter. What is the velocity of the fluid in each of the two pipes?
a) v/2
b) v
c) 2v
d) 4v
A spherical body is immersed in a fluid with a density ρ. What is the magnitude of the buoyant force acting on the body?
a) ρVg
b) (4/3)πr^3 ρg
c) (4/3)πr^3 ρVg
d) 4πr^2 ρg
A fluid is flowing through a pipe with a constant velocity v. If the diameter of the pipe is doubled, what happens to the flow rate of the fluid?
a) The flow rate remains the same.
b) The flow rate doubles.
c) The flow rate quadruples.
d) The flow rate is halved.
A block of mass m is submerged in a fluid with a density ρ. What is the magnitude of the buoyant force acting on the block if the block is completely submerged in the fluid?
a) mg
b) ρVg
c) (ρV – m)g
d) (m – ρV)g
The coefficient of viscosity of a liquid depends upon:
a) Temperature only
b) Pressure only
c) Both temperature and pressure
d) Neither temperature nor pressure
Which of the following statement is true for an ideal fluid?
a) It has infinite viscosity
b) It is incompressible
c) It has no pressure
d) Its density is zero
A cylindrical vessel of height H is filled with a liquid of density ρ to a height h. The force exerted by the liquid on the base of the vessel is:
a) ρgh^2/2
b) ρgh^2
c) ρgH^2/2
d) ρgH^2
Two glass tubes of radii R and 2R are connected to each other as shown in the figure. If a liquid of density ρ is filled in the tubes, then the pressure difference between the points A and B is:
[image: two connected glass tubes with different radii and filled with a liquid]
a) 0
b) ρgR
c) ρgR/3
d) ρgR/9
A small hole is made at a height h from the bottom of a container filled with water. The velocity of water coming out of the hole is proportional to:
a) h
b) h^2
c) √h
d) 1/√h
A uniform cylinder of height H and base area A is immersed vertically in a liquid of density ρ. If the cylinder is depressed and released, then it executes:
a) SHM with time period 2π√(ρA/g)
b) SHM with time period 2π√(ρH/g)
c) Non-uniform circular motion
d) Uniform circular motion
The velocity of a fluid flowing through a pipe is v. The pipe suddenly widens, and the area of cross-section of the pipe becomes double. The pressure of the fluid in the widened part of the pipe:
a) Increases
b) Decreases
c) Remains the same
d) May increase or decrease depending upon the nature of the fluid
The velocity of efflux for an orifice in a tank is:
a) Greater than the velocity of the liquid near the bottom of the tank
b) Equal to the velocity of the liquid near the bottom of the tank
c) Less than the velocity of the liquid near the bottom of the tank
d) None of the above
A fluid flowing through a pipe is subjected to a pressure drop. The magnitude of the pressure drop is directly proportional to:
a) The viscosity of the fluid
b) The velocity of the fluid
c) The density of the fluid
d) The diameter of the pipe
The bulk modulus of a fluid is defined as the ratio of:
a) Volumetric stress to volumetric strain
b) Shear stress to shear strain
c) Young’s modulus to density
d) Surface tension to viscosity
A small hole is made at the bottom of a container filled with a liquid. The velocity of the liquid coming out of the hole is given by:
a) v = √(2gh)
b) v = √(2gH)
c) v = √(gh)
d) v = √(gH)
The angle of contact between a liquid and a solid surface is defined as the angle between:
a) The tangent to the liquid surface at the point of contact and the solid surface
b) The normal to the liquid surface at the point of contact and the solid surface
c) The line of intersection of the liquid surface and the solid surface and the solid surface
d) The line of intersection of the liquid surface and the solid surface and the liquid surface
The velocity distribution for a laminar flow of a fluid through a pipe is given by:
a) Parabolic distribution
b) Uniform distribution
c) Exponential distribution
d) No velocity distribution exists for laminar flow
Which of the following statements is true for an ideal fluid?
a) It has no viscosity
b) It is compressible
c) It does not flow
d) It does not exert pressure
The terminal velocity of a sphere falling in a fluid is given by:
a) (2gr^2(ρs-ρf))/9η
b) (2gr^2(ρf-ρs))/9η
c) (2g(r^3)(ρs-ρf))/9η
d) (2g(r^3)(ρf-ρs))/9η
Where r is the radius of the sphere, ρs is the density of the sphere, ρf is the density of the fluid, and η is the viscosity of the fluid.
The velocity of a fluid flowing through a horizontal pipe is greatest at:
a) The center of the pipe
b) The top of the pipe
c) The bottom of the pipe
d) The walls of the pipe
The pressure difference between two points in a fluid is given by:
a) Bernoulli’s equation
b) Pascal’s law
c) Archimedes’ principle
d) Poiseuille’s law
Which of the following statements is true for turbulent flow?
a) It has a uniform velocity profile
b) It occurs at low Reynolds numbers
c) It is characterized by eddies and vortices
d) It has a laminar velocity profile
Which of the following factors affect the viscosity of a fluid?
a) Temperature and pressure
b) Temperature and density
c) Pressure and density
d) Velocity and pressure
The Reynolds number is a dimensionless quantity that is used to predict:
a) The laminar or turbulent nature of fluid flow
b) The density of a fluid
c) The viscosity of a fluid
d) The pressure drop across a fluid
Which of the following statements is true for the Bernoulli’s equation?
a) It states that the total energy of a fluid flowing through a pipe is conserved
b) It states that the pressure of a fluid decreases as its velocity increases
c) It is applicable only for incompressible fluids
d) It is derived from the principle of continuity
The capillary rise h of a liquid in a capillary tube of radius r is given by the formula:
a) h = 2Tcosθ/ρgr
b) h = 2Tcosθ/ρgr^2
c) h = 2Tsinθ/ρgr
d) h = 2Tsinθ/ρgr^2
Where T is the surface tension, θ is the contact angle, ρ is the density of the liquid, and g is the acceleration due to gravity.
The terminal velocity of a particle falling through a fluid is given by:
a) v = (2g(R^2)(ρs-ρf))/9η
b) v = (2g(R^2)(ρf-ρs))/9η
c) v = (2g(R^3)(ρs-ρf))/9η
d) v = (2g(R^3)(ρf-ρs))/9η
Where R is the radius of the particle, ρs is the density of the particle, ρf is the density of the fluid, and η is the viscosity of the fluid.
We hope there NEET MCQ of Class 11 Mechanical Properties of Fluids will help you to score an excellent rank in NEET-UG. If you have any queries feel free to write in the comments section. We at Study Rate are always ready to serve our students.
