Gamma Question Bank for Engineering Physics>Chapter 9 - Mechanical Properties of Fluids>Assignment>Q 12

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A ball floats on the surface of water in a container exposed to the atmosphere. Volume $V_{1}$ of its volume in inside the water. If the container is now covered and the air is pumped out. Now let $V_{2}$ be the volume immersed in water, then

(Density of air $ρ_{a} = 1.204 kg m^{- 3}$ )

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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 13

If equal masses of two liquids of densities

d_{1}

and

d_{2}

are mixed together, the density of the mixture is

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Gamma Question Bank for Engineering Physics>Chapter 9 - Mechanical Properties of Fluids>Assignment>Q 16

The cross-sections of a pipe at two points

A

and

B

are in the ratio

1 : 4 .

If the speed of water flowing through the pipe at point

A

is

v

, its speed at point

B

is

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Gamma Question Bank for Engineering Physics>Chapter 9 - Mechanical Properties of Fluids>Assignment>Q 17

The working of a scent sprayer is based on

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Gamma Question Bank for Engineering Physics>Chapter 9 - Mechanical Properties of Fluids>Assignment>Q 18

The velocity of efflux of a fluid through an orifice

15 cm

below the fluid surface (which is open to the atmosphere) is [Take

g = 10 {ms}^{- 2}

]

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Gamma Question Bank for Engineering Physics>Chapter 9 - Mechanical Properties of Fluids>Assignment>Q 19

In Magnus effect, lift occurs towards the direction where

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Gamma Question Bank for Engineering Physics>Chapter 9 - Mechanical Properties of Fluids>Assignment>Q 20

Bernoulli's equation is ideally valid for

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

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 $B ?$

Question Image

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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}

)