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.
Viscosity is the property of a fluid by virtue of which it:
A.
Conducts electricity
B.
Floats on water
C.
Opposes the relative motion between its different layers (internal friction)
D.
Has zero resistance to flow
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ANSWER :
C. Opposes the relative motion between its different layers (internal friction)
2.
Viscous force between two adjacent layers of a fluid is given by Newton's law of viscosity:
A.
F = 畏v虏
B.
F = -畏A(dv/dy)
C.
F = 畏/Av
D.
F = 畏A 脳 v
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ANSWER :
B. F = -畏A(dv/dy)
3.
The coefficient of viscosity 畏 has SI unit:
A.
Pa
B.
kg路m/s
C.
N/m
D.
Pa路s (N路s/m虏 or kg/m路s)
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ANSWER :
D. Pa路s (N路s/m虏 or kg/m路s)
4.
The CGS unit of coefficient of viscosity is:
A.
Stokes
B.
Pascal
C.
Poise (P)
D.
Newton
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ANSWER :
C. Poise (P)
5.
The dimensional formula of coefficient of viscosity 畏 is:
A.
[ML鈦宦筎鈦宦筣
B.
[MLT鈦宦筣
C.
[ML虏T鈦宦筣
D.
[ML鈦宦筎鈦宦瞉
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ANSWER :
A. [ML鈦宦筎鈦宦筣
6.
Velocity gradient is defined as:
A.
Velocity divided by time
B.
Force per unit area
C.
Acceleration
D.
Rate of change of velocity with distance perpendicular to flow direction (dv/dy)
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ANSWER :
D. Rate of change of velocity with distance perpendicular to flow direction (dv/dy)