Physics GK 13 - Viscosity

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1).
What of the following represents viscosity?
2).
What is the SI unit of viscosity?
3).
Which of these fluids has the highest viscosity?
4).
What happens to the viscosity of a liquid with increase in temperature?
5).
What do we call the maximum velocity of a fluid in a tube for which the flow remains streamlined?
6).
Which of the following represents Kinematic viscosity?
7).
Which of the following is the SI unit of Kinematic viscosity?
8).
What is the Gaussian unit of kinematic viscosity?
9).
Which of these ratios give the viscosity of a fluid?
10).
What is Reynolds number?
1. What of the following represents viscosity?
[A] resistance to fluid motion
[B] pressure difference between two fluids
[C] potential energy stored in a fluid
[D] roughness of the surface
2. What is the SI unit of viscosity?
[A] candela
[B] poiseiulle
[C] Newton/m
[D] No units
3. Which of these fluids has the highest viscosity?
[A] Water
[B] Honey
[C] Blood
[D] Air
4. What happens to the viscosity of a liquid with increase in temperature?
[A] it increases
[B] it decreases
[C] it may increase or decrease
[D] No change
5. What do we call the maximum velocity of a fluid in a tube for which the flow remains streamlined?
[A] Hyper velocity
[B] critical velocity
[C] stream velocity
[D] laminar velocity
6. Which of the following represents Kinematic viscosity?
[A] Viscosity/temperature
[B] Viscosity/area
[C] Viscosity/density
[D] Viscosity/mass
7. Which of the following is the SI unit of Kinematic viscosity?
[A] m3/s
[B] Kg/s
[C] m s-1
[D] m2/s
8. What is the Gaussian unit of kinematic viscosity?
[A] Henry
[B] Stokes
[C] poiseiulle
[D] Watt
9. Which of these ratios give the viscosity of a fluid?
[A] ratio of the shearing stress to the velocity gradient
[B] ratio of the shearing stress to the weight of the fluid
[C] ratio of the shearing stress to the density of fluid
[D] ratio of the velocity gradient and shearing stress
10. What is Reynolds number?
[A] ratio of inertial force to viscous force
[B] ratio of weight of fluid to viscous force
[C] ratio of velocity gradient to viscous force
[D] reciprocal of viscous force
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