Question # 1

When the velocity of a liquid flowing steadily in a tube increases, its pressure?

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Decreases

Increases

Remains same

Zero

The fluid which is incompressible and non viscous is called

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Ideal fluid

Non-ideal fluid

Prefect fluid

All

The smooth or steady stream-line flow is know as

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Laminar flow

Turbulent flow

Both a and b

None of the above

In a container having water filled up to a height h, a hole is made in the bottom. The velocity of water flowing out of the hole is

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Independent of h

Proportional to h^1/2

Proportional to h

Proportional to h²

Which of the following options correctly states the equation of continuity for an ideal fluid?

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A₁A₂= V₁V₂

A₁/A₂= V₂/V₁

A₁/A₂= V₁/V₂

none of the above

Viscosity is defined as

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the friction between fluid and its container's walls

the internal friction between two layers of fluid

the resistance to flow a fluid experiences

the extent to which outside factors effect the fluid's flow

Viscosity of water is ______ that of air but ___ that of plasma.

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More, more

Less, more

Less, less

More, less

The terminal velocity of a small size spherical body of radius R moving in a fluid varies as

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R

R²

1/R

(1/R)²

Pressure exerted by a gas on the walls of its container in due to

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adhesion between the gas molecules and the container

cohesion between the gas molecules and the container

collision between the gas molecules and the container

surface tension of the gas

What are the SI base units of the coefficient of viscosity

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Kg m s^-2

kgm² s^-2

Kg m s^-1

kg m^-1s^-1

One torr is equal to

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13.33 N/m²

760 N/m²

760 mm Hg

133.3 N/m²

The density of blood is nearly equal to that of

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mercury

sodium

water

honey

The flow of an ideal fluid is

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streamline flow

incompressible flow

non-viscous

all of the above

A device used to measure the speed of liquid flow is known as

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barometer

speedometer

sphygmomanometer

venture-meter

Bernoulli's equation is based upon law of conservation

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Mass

Momentum

Energy

None of these

The effect of friction between different layers of a flowing fluid is described in terms of

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motion of fluid

nature of fluid

colour of fluid

viscosity of fluid

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ECAT Physics Chapter 6 Fluid Dynamics Online Test MCQs With Answers

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