Coefficient of Viscosity of a Given Viscous Liquid by Measuring the Terminal Velocity of a Given Spherical Body NEET Questions

Physics - Experimental Skills

Coefficient of Viscosity of a Given Viscous Liquid by Measuring the Terminal Velocity of a Given Spherical Body MCQ Questions


1.
The coefficient of viscosity of a liquid is defined as the ratio of:
A.
Shear stress to velocity gradient
B.
Velocity gradient to shear stress
C.
Force to displacement
D.
Displacement to force
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ANSWER :
A. Shear stress to velocity gradient
2.
SI unit of viscosity is:
A.
Pascal-second
B.
Joule-second
C.
Newton-meter
D.
Meter per second
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ANSWER :
A. Pascal-second
3.
Which law is used to determine the coefficient of viscosity by measuring terminal velocity?
A.
Newton’s law
B.
Stokes’ law
C.
Bernoulli’s principle
D.
Archimedes’ principle
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ANSWER :
B. Stokes’ law
4.
Terminal velocity of a spherical body in a viscous liquid depends on:
A.
Density of liquid only
B.
Radius of the sphere only
C.
Mass of the sphere only
D.
All the above
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ANSWER :
D. All the above
5.
According to Stokes’ law, the viscous force acting on a small sphere moving in a fluid is proportional to:
A.
The radius of the sphere
B.
The velocity of the sphere
C.
The density of the fluid
D.
The square of velocity
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ANSWER :
A. The radius of the sphere
6.
Terminal velocity is achieved when:
A.
Viscous force is minimum
B.
Viscous force equals upthrust
C.
Viscous force equals net force
D.
All forces balance each other
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ANSWER :
D. All forces balance each other