Question # 1

The term Brownian movement refers to

Choose an answer

irregular motions of small particles suspended in a fluid

convection currents in a liquid or gas

convection currents in a gas but not in a liquid

the stretching of a body beyond its elastic limit

Under normal circumstances, the volume of blood is sufficient to keep the vessels

Choose an answer

flatted for all times

inflated for all times

inflated for small times

none of them

What is another name for laminar flow?

Choose an answer

streamline

unsteady flow

turbulent flow

both (a) and (b)

If water rises 4 cm in a long, thin tube because of capillary action, then, under corresponding conditions of use, the rise (in the tube) of a liquid whose density is 2 g/cm²will be

Choose an answer

1 cm

2 cm

8 cm

None

Drag force increases if speed of the object moving through the fluid:

Choose an answer

Increases

Decreases

Remains constant

None of these

Viscosity is defined as

Choose an answer

the friction between fluid and its container's walls

the internal friction between two layers of fluid

the resistance to flow a fluid experiences

the extent to which outside factors effect the fluid's flow

The maximum drag force on a falling sphere is 9.8 N, it weight is

Choose an answer

1 N

9.8 N

4.9 N

Cannot be calculated

The smooth or steady streamline flow is known as

Choose an answer

laminar flow

turbulent flow

both of them

none of them

According to the equation of continuity, when water falls from the tap, it's speed increases and its cross-sectional area

Choose an answer

decreases

increases

becomes zero

none of them

The SI unit of viscosity is

Choose an answer

kg m^-1s^-1

kg ms^-1

kg m^-1s^-2

kg m^-1s

Above a certain velocity of a fluid is called

Choose an answer

turbulent flow

steady flow

either of them

both of them

According to slok's law, drag force depends on

Choose an answer

Radius of the spherical body

Terminal velocity of body

Coefficient of viscosity

All of above

The instrument which detects the instant at which external pressure becomes equal to the systolic pressure is

Choose an answer

stethoscope

thermometer

manometer

barometer

The dimensions of viscosity are:

Choose an answer

M²L^-1T^-2

M^-1L¹T^-1

M^-1L^-1T

ML^-1T^-1

Bernoulli's equation is important in the field of

Choose an answer

Electrical circuit

Magnetism

Photoelectric effect

Flow of fluids

More Classes

Other Links

ECAT Physics Chapter 6 Fluid Dynamics Online Test MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer