laboursonline – MCQs, Mock Tests | MCAT MCAT Physics Mcq Questions Fluid Dynamics

Distance covered by a freely falling body in 2 seconds will be

1. 4.9 m
2. 19.6 m
3. 39.2 m
4. 44.1 m

✅ Correct Answer: 2

The distance covered by a body in time t starting from rest is

1. at2/2
2. Vt
3. a2t/2
4. at2

✅ Correct Answer: 1

Flight of a rocket in the space is an example of

1. second law of motion
2. third law of motion
3. first law of motion
4. law of gravitation

✅ Correct Answer: 2

The trajectory (or path) of a projectile is

1. straight line
2. parabola
3. hyperbola
4. circle

✅ Correct Answer: 2

At which angle the range of the projectile is maximum

1. 45?
2. 60?
3. 30?
4. none

✅ Correct Answer: 1

The force beared by a wall on which water strikes normally at a speed of 10m/sec and at a discharge of 0.0001m3/sec is.

1. 1 N
2. 10 N
3. 100 N
4. none

✅ Correct Answer: 1

Time rate of change of momentum is equal to

1. force
2. impulse
3. velocity
4. both (a) and (c)

✅ Correct Answer: 1

The range of the projectile at 30? and 60? are

1. equal to 45?
2. equal to 90?
3. equal to each other
4. none of the above

✅ Correct Answer: 3

Why Ballistic missile fails in some circumstances of precision.

1. due to their shape
2. due to air resistance
3. due to angle of projection
4. att of these

✅ Correct Answer: 2

When two bodies move toward each other with constant speeds the distance between them decreases at the rate of 6m / sec. If they move in the same direction the distance between them increases at the rate of 4m/sec. Then their speeds are

1. 5m/s, 1m/s
2. 3m/s, 3m/s
3. 6m/s, 1m/s
4. 4m/s, 2m/s

✅ Correct Answer: 1

Coefficient of viscosity of honey is greater than

1. milk
2. water
3. tarcoal
4. water

✅ Correct Answer: 4

According to equation of continuity A1V1 = A2V2 = constant. The constant is equal to

1. flow rate
2. volume of fluid
3. mass of fluid
4. density of fluid

✅ Correct Answer: 1

Equation of continuity is obtained by apply in law of conservation of

1. mass
2. energy
3. momentum
4. all

✅ Correct Answer: 1

Velocity of fluid increases where the pressure is

1. low
2. high
3. constant
4. changes continuously

✅ Correct Answer: 1

Speed of efflux can be determined by applying

1. Bernoulls theorem
2. Torricellis theorem
3. venture relation
4. all

✅ Correct Answer: 2

Blood vessels are

1. rigid
2. not rigid
3. of glass
4. of rubber

✅ Correct Answer: 2

Concentration of red cells in blood is about

1. 25%
2. 40%
3. 50%
4. 75%

✅ Correct Answer: 3

A man standing near a fast moving train may fall

1. on the train
2. away from the train
3. towards the train
4. on himself

✅ Correct Answer: 3

For which position maximum blood pressure in the body have the smallest value ?

1. standing straight
2. sitting on chair
3. sitting on ground
4. laying horizontally

✅ Correct Answer: 4

Two fog droplets have radius 2:3 their terminal velocities are

1. 04:06
2. 04:09
3. 02:09
4. 4.3

✅ Correct Answer: 2

Burnoullis equation is obtained by applying law of conservation of _

1. mass
2. energy
3. momentum
4. fluid

✅ Correct Answer: 2

Venturi meter is used to measure

1. fluid pressure
2. fluid density
3. fluid speed
4. none

✅ Correct Answer: 3

In cricket when a bowler produce reverse swing the ball will move towards

1. shinning side of the ball
2. rough side
3. seam of the ball
4. goes straight

✅ Correct Answer: 1

Stokes law is applicable if body has ________shape

1. rough
2. square
3. circular
4. spherical

✅ Correct Answer: 4

One torr is equal to

1. 1.333 Nm-2
2. 1333 Nm-2
3. 13.33 Nm-2
4. 133.3 Nm2

✅ Correct Answer: 4

Systolic pressure is called

1. low blood pressure
2. high blood pressure
3. normal blood pressure
4. abnormal blood pressure

✅ Correct Answer: 2

Instrument used to measure blood pressure is called

1. venturimeter
2. blood pressure
3. sphgmomanometer
4. sonometer

✅ Correct Answer: 3

A chimney works works best if air exposed to the chimmey is

1. stationary
2. moving
3. moving slowly
4. moving fast

✅ Correct Answer: 4

Which one is venturi relation ?

1. P1 - P2 = 1/2 ?V22
2. V2 = 2g (h1-h2)
3. P = 1 /2?V2 = ?gh = constant
4. A1 V1 = A2 V2 = constant

✅ Correct Answer: 1

The effect of the decrease in pressure with the increase of the speed of fluid in a horizontal pipe is known as

1. Bernoullirt effect
2. Torricelli effect
3. Venturi effect
4. Stokes effect

✅ Correct Answer: 3

Ideal fluid is

1. non-viscous
2. incompressible
3. steady flow
4. possess all properties

✅ Correct Answer: 4

Laminar flow usually occurs at speeds.

1. low
2. high
3. very high
4. some time high and some time low

✅ Correct Answer: 1

For _________ flow the path of the fluid particles cannot be tracked.

1. laminar
2. stream line
3. turbulent
4. both (a) and (b)

✅ Correct Answer: 3

Sphygmomanometers measures blood pressure.

1. statically
2. dynamically
3. some time static and some time dynamic
4. none of these

✅ Correct Answer: 2

Carburetor of a car is a application of

1. Venturi meter
2. Bernoulli equation
3. Both (a) and (b)
4. None

✅ Correct Answer: 3

The blood flow is ____________ flow at disystolic pressure

1. laminar
2. turbulent
3. mixed
4. none

✅ Correct Answer: 1

The profile of aeroplane wing which lifts it up is called as

1. wing shape
2. aerofoil profile
3. curved profile
4. none of these

✅ Correct Answer: 2

Bernoullis equation is applicable for

1. laminar flow
2. turbulent flow
3. both laminar and turbulent flow
4. none of these

✅ Correct Answer: 3

The density of human blood is nearly equal to

1. water
2. honey
3. mercury
4. oil (kerosene)

✅ Correct Answer: 1

The speed of the fluid is maximum in the venturimeter at

1. convergent duct
2. divergent duct
3. throat
4. none of these

✅ Correct Answer: 3

The normal blood pressure range for an human body is

1. 120 to 80 torr
2. 100 to 80 torr
3. 120 to 60 torr
4. 60 to 140 torr

✅ Correct Answer: 4

Optical active crystals rotates the

1. vibrating plane
2. polarization plane
3. diffraction plane
4. interference plane

✅ Correct Answer: 2

Which is not optically active?

1. sugar
2. tartaric acid
3. water
4. sodium chlorate

✅ Correct Answer: 3

In double slit experiment we observe

1. interference fringes only
2. diffraction fringes only
3. both interference and diffraction fringes
4. polirized frringes

✅ Correct Answer: 3

When light incident normally on thin film the path difference depends upon

1. thickness of the film only
2. nature of the film only
3. angle of indidence only
4. all thickness nature and angle of incidence

✅ Correct Answer: 4

Which one of the following properties of light does not change with the nature of the medium?

1. velocity
2. wavelength
3. amplitude
4. frequency

✅ Correct Answer: 4

Light reaches the earth form sun in nearly

1. 15 minutes
2. 10 minutes
3. 8 minutes
4. 8 minutes 30 seconds

✅ Correct Answer: 4

Photoelectric effect was given by

1. Hertz
2. Fresnel
3. Einstein
4. Plank

✅ Correct Answer: 3

According to Einstein light travels form one place to another in the form of

1. waves
2. particles
3. photons
4. it was not his discovery

✅ Correct Answer: 3

Longitudinal waves do not exhibit

1. reflection
2. refraction
3. diffraction
4. polarization

✅ Correct Answer: 4