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Dimensional formula of viscosity is

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Important Questions on Properties of Matter

HARD

Physics>Mechanics>Properties of Matter>Viscosity

The platelets are drifting with the blood flowing in a streamline flow through a horizontal artery as shown below:

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Artery is contracted in region $II$ . Choose the correct statement.

MEDIUM

Physics>Mechanics>Properties of Matter>Viscosity

Eight drops of water, each of radius

2 m m

are falling through air at a terminal velocity of

8 c m s^{- 1}

. If they coalesce to from a single drop, then the terminal velocity of combined drop will be:

HARD

Physics>Mechanics>Properties of Matter>Viscosity

Water from a pipe is coming at a rate of

100

liters per minute. If the radius of the pipe is

5 c m,

the Reynolds number for the flow is of the order of: (density of water =

100 k g / m^{3},

coefficient of viscosity of water

= 1 m P a s)

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Physics>Mechanics>Properties of Matter>Viscosity

A small metal ball of diameter

4 m m

and density

10.5 g / {c m}^{3}

is dropped in glycerine of density

1.5 g / {c m}^{3}

. The ball attains a terminal velocity of

8 c m / s

, the coefficient of viscosity of glycerine is -

EASY

Physics>Mechanics>Properties of Matter>Viscosity

Spherical ball of radius

r

is falling in a viscous fluid of viscosity

η

with a velocity

v

. The retarding viscous force acting on the spherical ball is

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Physics>Mechanics>Properties of Matter>Viscosity

Coefficient of kinetic friction can be found out by inclined plane method and horizontal plane method.

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Physics>Mechanics>Properties of Matter>Viscosity

The clouds float in the atmosphere on account of their.

MEDIUM

Physics>Mechanics>Properties of Matter>Viscosity

Streamline flow is more likely for liquid with

EASY

Physics>Mechanics>Properties of Matter>Viscosity

A spherical body of diameter

D

is falling in viscous medium. Its terminal velocity is equal to

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Physics>Mechanics>Properties of Matter>Viscosity

What is the difference between Newtonian and non Newtonian?

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Physics>Mechanics>Properties of Matter>Viscosity

Where are non-Newtonian fluids used?

MEDIUM

Physics>Mechanics>Properties of Matter>Viscosity

A small spherical drop falls from rest in a viscous liquid. Due to friction, heat is produced. The correct relation between the rate of production of heat and the radius of the spherical drop at terminal velocity will be

EASY

Physics>Mechanics>Properties of Matter>Viscosity

How fluidity is related to viscosity?

HARD

Physics>Mechanics>Properties of Matter>Viscosity

A massless container is filled with liquid of density $ρ$ . It contains two holes as shown in figure. Container rests on ground. Area of the two holes are $A$ each. Container is filled with liquid upto height $H$ . Then -
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