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The gas inlet is a tubular projection below the air hole where the gas enters the Bunsen burner and mixes with the _____.

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Important Questions on Mechanical Properties of Fluids

MEDIUM

Physics>Mechanical Properties of Matter>Mechanical Properties of Fluids>Bernoulli's Principle and Its Applications

Water is flowing at a speed of 1.5 m s^-1 through a horizontal tube of cross-sectional area 10^-2 m²and you are trying to stop the flow by your palm. Assuming that the water stops immediately after hitting the palm, the minimum force that you must exert should be (density of water = 10³ kg m^-3)

EASY

Physics>Mechanical Properties of Matter>Mechanical Properties of Fluids>Bernoulli's Principle and Its Applications

An aeroplane gets its upward lift due to a phenomenon described by the

MEDIUM

Physics>Mechanical Properties of Matter>Mechanical Properties of Fluids>Bernoulli's Principle and Its Applications

A vessel completely filled with water has holes

A

and

B

at depths

h

and

3 h

from the top respectively. The hole

A

is a square of side

L

and

B

is a circle of radius

r

. The water flowing out per second from both the holes is same. Then

L

is equal to

MEDIUM

Physics>Mechanical Properties of Matter>Mechanical Properties of Fluids>Bernoulli's Principle and Its Applications

An ideal fluid flows (laminar flow) through a pipe of non-uniform diameter. The maximum and minimum diameters of the pipes are

6.4 c m

and

4.8 c m

, respectively. The ratio of the minimum and the maximum velocities of fluid in this pipe is:

MEDIUM

Physics>Mechanical Properties of Matter>Mechanical Properties of Fluids>Bernoulli's Principle and Its Applications

Water from a tap emerges vertically downwards with an initial speed of

1.0 m s^{- 1}

. The cross

-

sectional area of the tap is

10^{- 4} m^{2}

. Assume that the pressure is constant throughout the stream of water and that the flow is streamlined. The cross

-

sectional area of the stream,

0.15 m

below the tap would be:
(Take

g = 10 m s^{- 2}

)

MEDIUM

Physics>Mechanical Properties of Matter>Mechanical Properties of Fluids>Bernoulli's Principle and Its Applications

Water flows in a horizontal tube (see figure). The pressure of water changes by

700 N m^{- 2}

between

A

and

B

where the area of cross section are

40 {cm}^{2}

and

20 {cm}^{2},

respectively. Find the rate of flow of water through the tube. (density of water

= 1000 kg m^{- 3}

)

HARD

Physics>Mechanical Properties of Matter>Mechanical Properties of Fluids>Bernoulli's Principle and Its Applications

A cylindrical container containing water has a small hole at height of $H = 8 cm$ from the bottom and at a depth of $2 cm$ from the top surface of the liquid. The maximum horizontal distance travelled by the water before it hits the ground $(x)$ is

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HARD

Physics>Mechanical Properties of Matter>Mechanical Properties of Fluids>Bernoulli's Principle and Its Applications

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In the diagram shown, the difference in the two tubes of the manometer is $5 cm$ , the cross-section of the tube at $A$ and $B$ is $6 {mm}^{2}$ and $10 {mm}^{2}$ respectively. The rate at which water flows through the tube is $(g = 10 m s^{- 2})$

MEDIUM

Physics>Mechanical Properties of Matter>Mechanical Properties of Fluids>Bernoulli's Principle and Its Applications

A wind with speed

40 m s^{- 1}

blows parallel to the roof of a house. The area of the roof is

250 m^{2}

. Assuming that the pressure inside the house is atmospheric pressure, the force exerted by the wind on the roof and the direction of the direction of the force will be :

(ρ_{air} = 1.2 kg m^{- 3})

MEDIUM

Physics>Mechanical Properties of Matter>Mechanical Properties of Fluids>Bernoulli's Principle and Its Applications

Two capillaries of length

L a n d 2 L

and of radii

R a n d 2 R

respectively are connected in series. The net rate of flow of fluid through them will be (Given, rate of the flow through single capillary,

X = π p R^{4}

/8ɳL )

MEDIUM

Physics>Mechanical Properties of Matter>Mechanical Properties of Fluids>Bernoulli's Principle and Its Applications

An incompressible liquid flows through a horizontal tube as shown in the following fig. Then the velocity v of the fluid is
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MEDIUM

Physics>Mechanical Properties of Matter>Mechanical Properties of Fluids>Bernoulli's Principle and Its Applications

A liquid flows through a pipe of non-uniform cross-section. If

A_{1}

and

A_{2}

are the cross-sectional area of the pipe at two points, the ratio of velocities of the liquid at these points will be

MEDIUM

Physics>Mechanical Properties of Matter>Mechanical Properties of Fluids>Bernoulli's Principle and Its Applications

A horizontal pipe of cross-sectional diameter 5 cm carries water at velocity of

4 {m s}^{- 1}

. The pipe is connected to a smaller pipe with a cross-sectional diameter 4 cm. the velocity of water through the smaller pipe is

MEDIUM

Physics>Mechanical Properties of Matter>Mechanical Properties of Fluids>Bernoulli's Principle and Its Applications

A cylindrical vessel open at the top is 20 cm high and 10 cm in diameter. A circular hole whose cross-sectional area 1cm² is cut at the centre of the bottom of the vessel. Water flows from a tube above it into the vessel at the rate 100 cm³ s^-1 . Find the height of water in the vessel under steady state.

MEDIUM

Physics>Mechanical Properties of Matter>Mechanical Properties of Fluids>Bernoulli's Principle and Its Applications

A liquid is allowed into a tube of truncated cone shape. Identify the correct statement from the following.

MEDIUM

Physics>Mechanical Properties of Matter>Mechanical Properties of Fluids>Bernoulli's Principle and Its Applications

A cylinder of height

20 m

is completely filled with water. The velocity of efflux of water (in

m s^{- 1}

) through a small hole on the side wall of the cylinder near its bottom is

MEDIUM

Physics>Mechanical Properties of Matter>Mechanical Properties of Fluids>Bernoulli's Principle and Its Applications

Water flows steadily through a horizontal pipe of variable cross-section. If the pressure of water is

p

at a point where flow speed is

v

, the pressure at another point where the flow of speed is

2 v

, is (take density of water as

ρ

)

MEDIUM

Physics>Mechanical Properties of Matter>Mechanical Properties of Fluids>Bernoulli's Principle and Its Applications

A broad pipe having a radius

10 cm

branches into two pipes of radii

5 cm

and

3 cm

. If the velocity of flowing water in the pipe of radius

3 cm

5 cm s^{- 1}

, determine the velocities of water in the remaining two pipes. Given that the rate of discharge through the main branch is

600 π {cm}^{2} s^{- 1}

HARD

Physics>Mechanical Properties of Matter>Mechanical Properties of Fluids>Bernoulli's Principle and Its Applications

A laminar stream is flowing vertically down from a tap of cross-section area 1 cm². At a distance 10 below the tap, the cross-section area of the stream has reduced to 1/2 cm². Find the volumetric flow rate of water from the tap

HARD

Physics>Mechanical Properties of Matter>Mechanical Properties of Fluids>Bernoulli's Principle and Its Applications

A small hole is made at the bottom of a symmetrical jar as shown in figure. A liquid is filled into the jar upto a certain height. The rate of descension of liquid is independent of the level of the liquid in the jar. Then the surface of the jar is a surface of revolution of the curve -

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The gas inlet is a tubular projection below the air hole where the gas enters the Bunsen burner and mixes with the _____.

Important Questions on Mechanical Properties of Fluids

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