Question # 1

The equation of continuity

A₁V₁= A₂V₂is for the flow of

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an ideal fluid

an incompressible fluid

a non visconcous fluid

all of the above

A body is floating in a liquid. The up thrust on the body is

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Equal to weight of liquid displaced

Zero

Less than the weight of liquid displaced

Weight of body-weight of liquid displaced

The law of conservation of mass gives us the

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equation of continuity

Bernoulli's theorem

both of them

none of them

The un-steady streamline flow is called

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laminar flow

turbulent flow

both of them

none of them

During the free fall motion of an object, when its weight becomes equal to the drag force, then it will move with

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maximum speed

zero speed

maximum speed

none of them

High speed meteors rushing through air reduces to ashes because of:

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Force of gravity

High resistance of air

Drag force

None of these

The _____ viscous the medium is _____, is the value of terminal velocity of the droplet:

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More, lesser

Lesser, more

Both A and B

Lesser, lesser

The term Brownian movement refers to

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irregular motions of small particles suspended in a fluid

convection currents in a liquid or gas

convection currents in a gas but not in a liquid

the stretching of a body beyond its elastic limit

Surface tension of water is due to

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Inter molecular attractions

Inter molecular spaces

Inter molecular repulsion

None of above

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

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Decreases

Increases

Remains same

Zero

The instrument which detects the instant at which external pressure becomes equal to the systolic pressure is

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stethoscope

thermometer

manometer

barometer

Fluid friction is _____ the friction between two solid surfaces:

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Greater than

Smaller than

Equal to

None of these

With the increase of temperature viscosity

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Increase

Decrease

Remains same

Doubles

According to slok's law, drag force depends on

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Radius of the spherical body

Terminal velocity of body

Coefficient of viscosity

All of above

In a normal healthy person the value of systolic pressure is

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75 torr

80 torr

120 torr

all of them

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

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