Three capillaries of length L , L 2 and L 3 are connected in series. Their radii are r , r 2 and r 3 respectively. Then if stream-line flow is to be maintained and the pressure across the first capillary is P , then

Pressure difference across the end of second capillary is 8 p

Pressure difference across the third capillary is 43 p

Pressure difference across the end of second capillary is 16 p

Pressure difference across the third capillary is 56 p

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An ice cube contains a large air bubble. The cube is floating on the horizontal surface of water contained in a trough. What will happen to the water level, when the cube melts ?

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Important Questions on Mechanical Properties of Fluids

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Gamma Question Bank for Medical Physics>Chapter 10 - Mechanical Properties of Fluids>Assignment>Q 16

The reading of a spring balance when a block is suspended from it in air is

60

N .

This reading is changed to

40 N

when the block is fully submerged in water. The specific gravity of the block must be:

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Gamma Question Bank for Medical Physics>Chapter 10 - Mechanical Properties of Fluids>Assignment>Q 18

A cubical block is floating in a liquid with one fourth of its volume immersed in the liquid. If whole of the system accelerates upward with acceleration

\frac{g}{4},

the fraction of volume immersed in the liquid will be

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Gamma Question Bank for Medical Physics>Chapter 10 - Mechanical Properties of Fluids>Assignment>Q 19

A boat carrying a number of stones is floating in a water tank. If the stones are unloaded into water, the water level in the tank will

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Gamma Question Bank for Medical Physics>Chapter 10 - Mechanical Properties of Fluids>Assignment>Q 20

A block of ice is floating in a liquid of specific gravity

1.2

contained in a beaker. When the ice melts completely, the level of liquid in the vessel

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Gamma Question Bank for Medical Physics>Chapter 10 - Mechanical Properties of Fluids>Assignment>Q 21

Water flows in a stream line manner through a capillary tube of radius

a .

The pressure difference being

P

and the rate of flow is

Q .

If the radius is reduced to

\frac{a}{4}

and the pressure is increased to

4 P,

then the rate of flow becomes

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Gamma Question Bank for Medical Physics>Chapter 10 - Mechanical Properties of Fluids>Assignment>Q 22

Three capillaries of length

L, \frac{L}{2}

and

\frac{L}{3}

are connected in series. Their radii are

r, \frac{r}{2}

and

\frac{r}{3}

respectively. Then if stream-line flow is to be maintained and the pressure across the first capillary is

P,

then

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Gamma Question Bank for Medical Physics>Chapter 10 - Mechanical Properties of Fluids>Assignment>Q 23

Air streams horizontally past an air plane. The speed over the top surface is

60 m s^{- 1}

and that under the bottom surface is

45 m s^{- 1} .

The density of air is

1.293 kg m^{- 3},

then the difference in pressure is

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Gamma Question Bank for Medical Physics>Chapter 10 - Mechanical Properties of Fluids>Assignment>Q 24

Two water pipes

P

and

Q

having diameter

2 \times 10^{- 2} m

and

4 \times 10^{- 2} m

respectively are joined in series with the main supply line of water. The velocity of water flowing in pipe

P

An ice cube contains a large air bubble. The cube is floating on the horizontal surface of water contained in a trough. What will happen to the water level, when the cube melts ?

Important Questions on Mechanical Properties of Fluids

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