Question # 1

The body will move with terminal velocity when it acquires

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minimum speed

zero speed

maximum speed

none of them

How much force is required to slide one layer of the liquid over the other layer is measured by

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friction

density

viscosity

resistivity

Deep water almost runs still when surface water flow in rivers. What does it explains

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Magnus effect

Equation of continuity

Surface energy

Bernoulli's equation

During the steady flow, different streamlines

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cannot across each other

can across each other

either of them

neither of them

The drag force acting on a spherical droplet of radius 10^-5m moving with a velocity of 1 cm/sec in a fluid of velocity 5.31 x 10^-7m/sec. The units comes out to be:

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10^-16N

10^-14N

10^-12N

10^-10N

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

A flowing liquid possess

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K.E

P.E

Pressure Energy

All

Bernoulli's equation is applicable for

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turbulent flow

streamline flow

both (a) and (b)

all kinds of flows

According to the Bernoulli's equation, where the speed of the fluid is high, the pressure will be

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low

zero

high

all of them

At high altitude the blood oozes out of the nose and ear because

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The blood pressure increase at high altitudes

The percentage of oxygen in the air increase

The atmospheric pressure decrease there

The density of blood decrease at high altitudes

When each particle of the fluid moves along a smoth path, this path is known as

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straight path

smooth path

haphazard path

steamline

An object moving through a fluid experiences a retarding force called a

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frictional force

terminal force

opposing force

drag force

The flow of an ideal fluid is

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streamline flow

incompressible flow

non-viscous

all of the above

A container has a small hole in the bottom. Air can go through this hole,but water cannot. This can be best explained by the statement that

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water contains hydrogen atoms, air does not

water molecules are smaller than molecules in the air

surface tension of the water prevents it from

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

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

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Decreases

Increases

Remains same

Zero

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