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In a horizontal pipe of non-uniform cross-section, water flows with a velocity of 1 ms⁻¹ at a point where the diameter of the pipe is 20cm. The velocity of water in (ms⁻¹) at a point where the diameter of the pipe is 5cm is:

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Important Questions on Mechanical Properties of Fluids

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Achieve Indian Airforce Agniveer Vayu Physics Practice Book>Chapter 10 - Mechanical Properties of Fluids>Exercise>Q 13

Physical processes are sometimes described visually by lines. Only the following can cross

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Achieve Indian Airforce Agniveer Vayu Physics Practice Book>Chapter 10 - Mechanical Properties of Fluids>Exercise>Q 1

A cylindrical vessel contains a liquid of density

ρ

upto a height h. The liquid is closed by a piston of mass m and area of cross-section A. There is a small hole at the bottom of the vessel. The speed v with which the liquid comes out of the hole is

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Achieve Indian Airforce Agniveer Vayu Physics Practice Book>Chapter 10 - Mechanical Properties of Fluids>Exercise>Q 2

A pipe

A B C D

of uniform cross-section is bent into three sections, viz., a horizontal section

A B

, a vertical section

B C

with

C

below

B

, and a horizontal section

C D

. Liquid flowing through the pipe has speed

v_{1}

and pressure

p_{1}

in section

A B

, and speed

v_{2}

and pressure

p_{2}

in section

C D

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Achieve Indian Airforce Agniveer Vayu Physics Practice Book>Chapter 10 - Mechanical Properties of Fluids>Exercise>Q 3

Assertion: In case of motion of an ideal fluid in a horizontal tube, where the area of cross-section is minimum, pressure is maximum.
Reason: Hydrostatic pressure in different ideal liquids at points of different depth can be same.

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Achieve Indian Airforce Agniveer Vayu Physics Practice Book>Chapter 10 - Mechanical Properties of Fluids>Exercise>Q 4

Water is flowing continuously from a tap having an internal diameter

8 \times 10^{- 3} m .

The water velocity as it leaves the tap is 0.4 m/s. The diameter of the water stream at a distance

2 \times 10^{- 1}

m below the tap is close to

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Achieve Indian Airforce Agniveer Vayu Physics Practice Book>Chapter 10 - Mechanical Properties of Fluids>Exercise>Q 5

Bernoulli's equation is applicable to points

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Achieve Indian Airforce Agniveer Vayu Physics Practice Book>Chapter 10 - Mechanical Properties of Fluids>Exercise>Q 6

In steady horizontal flow

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Achieve Indian Airforce Agniveer Vayu Physics Practice Book>Chapter 10 - Mechanical Properties of Fluids>Exercise>Q 7

In the figure (in the vertical plane) shown an ideal liquid is flowing through the tube which is of uniform area of cross-section. The liquid has velocities

v_{A}

and

v_{B}

and pressure

P_{A}

and

P_{B}

at points

A

and

B

respectively. Then,
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In a horizontal pipe of non-uniform cross-section, water flows with a velocity of 1 ms−1 at a point where the diameter of the pipe is 20cm. The velocity of water in (ms−1) at a point where the diameter of the pipe is 5cm is:

Important Questions on Mechanical Properties of Fluids

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In a horizontal pipe of non-uniform cross-section, water flows with a velocity of 1 ms⁻¹ at a point where the diameter of the pipe is 20cm. The velocity of water in (ms⁻¹) at a point where the diameter of the pipe is 5cm is: