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Is viscosity a vector?

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प्रश्न

Is viscosity a vector?

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उत्तर

 Viscosity is not a vector quantity. It is a scalar quantity because viscosity is a property of liquid as it does not have any direction.

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अध्याय 10: Mechanical Properties of Fluids - Exercises [पृष्ठ ७४]

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एनसीईआरटी एक्झांप्लर Physics Exemplar [English] Class 11
अध्याय 10 Mechanical Properties of Fluids
Exercises | Q 10.11 | पृष्ठ ७४

संबंधित प्रश्न

Fill in the blanks using the word(s) from the list appended with each statement

Viscosity of gases. .. with temperature, whereas viscosity of liquids . . . with temperature (increases / decreases)


Fill in the blanks using the word(s) from the list appended with each statement

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With an increase in temperature, the viscosity of liquid and gas, respectively will __________.


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Derive Poiseuille’s formula for the volume of a liquid flowing per second through a pipe under streamlined flow.


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The velocity of a small ball of mass M and density d, when dropped in a container filled with glycerine becomes constant after some time. If the density of glycerine is `"d"/2`, then the viscous force acting on the ball will be ______


The velocity of a small ball of mass M and density d, when dropped in a container filled with glycerine becomes constant after some time. If the density of glycerine is `"d"/2` , then the viscous force acting on the ball will be ______.


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The velocity of a small ball of mass 0.3 g and density 8 g/cc when dropped in a container filled with glycerine becomes constant after some time. If the density of glycerine is 1.3 g/cc, then the value of viscous force acting on the ball will be x × 10-4 N, and the value of x is ______.

[use g = 10 m/s2]


A spherical solid ball of volume V is made of a material of density ρ1. It is falling through a liquid of density ρ22 < ρ1). Assume that the liquid applies a viscous force on the ball that is proportional to the square of its speed v, i.e., `"F"_"viscous"`= -kv2 (k > 0). The terminal speed of the ball is ______.


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Define the coefficient of viscosity.


Define velocity gradient.


An incompressible liquid is flowing through a uniform cross-sectional tube with a velocity 12 cm/ s. If the thickness of liquid layer is 0.8 cm, what is the velocity gradient of that flow of liquid?


A water pipe with diameter of 5.0 cm is connected to another pipe of diameter 2.5 cm. How would the speeds of the water flow compare?


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