Gamma Question Bank for Engineering Physics>Chapter 9 - Mechanical Properties of Fluids>Assignment>Q 21

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In the figure shown below, a fluid of density $2 \times 10^{3} kg m^{- 3}$ is flowing in a horizontal pipe. The speed of water at point $A$ is $4 cm s^{- 1}$ , what is its speed at point $B ?$

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Important Questions on Mechanical Properties of Fluids

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Gamma Question Bank for Engineering Physics>Chapter 9 - Mechanical Properties of Fluids>Assignment>Q 22

An open water tank has an orifice

10 cm

below the surface of water. If there is no loss of energy, then what is the speed of efflux? (Take

g = 10 m s^{- 2}

)

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Gamma Question Bank for Engineering Physics>Chapter 9 - Mechanical Properties of Fluids>Assignment>Q 23

A cubical box of wine has a small spout located in one of the bottom corners. When the box is full and placed on a level surface, opening the spout results in a flow of wine with a speed of

v_{0} .

When the box is half empty, someone lifts it at

45 °

so that the spout is at the lowest point. When the spout is opened, the wine flow out with a speed of

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Gamma Question Bank for Engineering Physics>Chapter 9 - Mechanical Properties of Fluids>Assignment>Q 24

A vessel is filled with two different liquids of densities $ρ$ and $2 ρ$ respectively as shown in the figure. The velocity of flow of liquid through a hole at height $\frac{h}{2}$ from bottom is

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Gamma Question Bank for Engineering Physics>Chapter 9 - Mechanical Properties of Fluids>Assignment>Q 25

A liquid of density

ρ

is filled in a vessel up to height

H

and a hole of cross section area

A

is made at a depth

h

below the free surface of liquid. The speed of liquid coming out of the hole is independent of
(i)

h

(ii)

a

(iii)

ρ

(iv)

g

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Gamma Question Bank for Engineering Physics>Chapter 9 - Mechanical Properties of Fluids>Assignment>Q 27

Bernoulli's equation is conservation of

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Gamma Question Bank for Engineering Physics>Chapter 9 - Mechanical Properties of Fluids>Assignment>Q 28

Reynolds number for a liquid of density

ρ

, viscosity

η

and flowing through a pipe of diameter

D

, is given by

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Gamma Question Bank for Engineering Physics>Chapter 9 - Mechanical Properties of Fluids>Assignment>Q 29

The amount of work done in blowing up a soap bubble of radius

2 cm

is [Given surface tension of soap solution

= 4 \times 10^{- 2} N m^{- 1}

]

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Gamma Question Bank for Engineering Physics>Chapter 9 - Mechanical Properties of Fluids>Assignment>Q 31

Adding detergents to the water increases its