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# the normal stress in a fluid will be constant in all directions at a point only if

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## The normal stress in a fluid will be constant in all directions at a point only if

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A

B

C

D

E

## it is at rest

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Updated on : 2022-09-05

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Correct option is E)

## If the body is at hydro-static balance which means the liquid is at rest, then the normal stress in fluid will be constant in all directions at a point.

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## [Solved] The normal stress is the same in all directions at a point i

Explanation: The pressure at any point in a fluid at rest has the same magnitude in all directions. In other words, when a certain pressure is applied at an

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## The normal stress is the same in all directions at a point in a fluid only when

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The fluid is frictional

The fluid is frictionless and incompressible

The fluid has zero viscosity and is at rest

One fluid layer has no motion relative to an adjacent layer

Option 4 : One fluid layer has no motion relative to an adjacent layer

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## Detailed Solution

Explanation:

The pressure at any point in a fluid at rest has the same magnitude in all directions.

In other words, when a certain pressure is applied at any point in a fluid at rest, the pressure is equally transmitted in all the directions and to every other point in the fluid. It is known as Pascal’s Law.​

Pascal's Law:

Pascal's principle states that pressure applied to fluids is equally transmitted in all directions, to all parts of the fluid and to all parts of a container.

The increase in pressure at one point of the enclosed liquid in an equilibrium of rest is transmitted equally to all other points of the liquid and also to the walls of the container, provided the effect of gravity is neglected.

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Last updated on Sep 22, 2022

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## More Properties of Fluids Questions

Q1. The weight per unit volume of a liquid at standard temperature and pressure is called:Q2. Property of fluid that describes its internal resistance is known asQ3. Dynamics Viscosity (μ) has the dimension as:Q4. Fluids which do not follow the linear relationship between shear stress and rate of deformation are termed as _______ fluids.Q5. Consider the following statements: Pressure coefficient is the ratio of (i) Pressure to dynamic pressure and is expressed as

ΔP(ρwV22)

(ii) Dynamic pressure to pressure and is expressed as

(ρwV22)ΔP

(iii) Pressure to dynamic pressure and is expressed as

ΔPγwH

(iv) Dynamic pressure to pressure and is expressed as

γwHΔP

Which of the above statements are correct?

Q6. The following results are obtained on shear stress (τ) and rate of deformation

(dudy)

at constant temperature for a fluid.

(dudy)

(radians/sec) 0 0 1 2 3 τ (kPa) 0 10 20 30 40 The above fluid is classified as

Q7. If the mass density of a fluid is 1000 kg/meter3 and its dynamic viscosity is 1 newton second/m2, then what will be its Kinematic viscosity (sq.m/s)?Q8. According to the Newton's law of viscosity for materials in liquid state, the shear stress is:Q9. What are the dimensions of surface tension?Q10. When a matter resists applied shear stress by static deformation, it is:

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## The normal stress in a fluid will be constant in all

The normal stress in a fluid will be constant in all directions at a point only if a) it is incompressible b) it has uniform viscosity c) it is frictionless d) it is at rest

Examveda

## The normal stress in a fluid will be constant in all directions at a point only if

A. it is incompressible

B. it has uniform viscosity

C. it is frictionless

D. it is at rest

## Join The Discussion

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Mohammed 8 day ago

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