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MCAT Physics Mcq Questions Fluid Dynamics
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1. Distance covered by a freely falling body in 2 seconds will be
4.9 m
19.6 m
39.2 m
44.1 m
2. The distance covered by a body in time t starting from rest is
at2/2
Vt
a2t/2
at2
3. Flight of a rocket in the space is an example of
second law of motion
third law of motion
first law of motion
law of gravitation
4. The trajectory (or path) of a projectile is
straight line
parabola
hyperbola
circle
5. At which angle the range of the projectile is maximum
45?
60?
30?
none
6. 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 N
10 N
100 N
none
7. Time rate of change of momentum is equal to
force
impulse
velocity
both (a) and (c)
8. The range of the projectile at 30? and 60? are
equal to 45?
equal to 90?
equal to each other
none of the above
9. Why Ballistic missile fails in some circumstances of precision.
due to their shape
due to air resistance
due to angle of projection
att of these
10. 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
5m/s, 1m/s
3m/s, 3m/s
6m/s, 1m/s
4m/s, 2m/s
11. Coefficient of viscosity of honey is greater than
milk
water
tarcoal
water
12. According to equation of continuity A1V1 = A2V2 = constant. The constant is equal to
flow rate
volume of fluid
mass of fluid
density of fluid
13. Equation of continuity is obtained by apply in law of conservation of
mass
energy
momentum
all
14. Velocity of fluid increases where the pressure is
low
high
constant
changes continuously
15. Speed of efflux can be determined by applying
Bernoulls theorem
Torricellis theorem
venture relation
all
16. Blood vessels are
rigid
not rigid
of glass
of rubber
17. Concentration of red cells in blood is about
25%
40%
50%
75%
18. A man standing near a fast moving train may fall
on the train
away from the train
towards the train
on himself
19. For which position maximum blood pressure in the body have the smallest value ?
standing straight
sitting on chair
sitting on ground
laying horizontally
20. Two fog droplets have radius 2:3 their terminal velocities are
04:06
04:09
02:09
4.3
21. Burnoullis equation is obtained by applying law of conservation of _
mass
energy
momentum
fluid
22. Venturi meter is used to measure
fluid pressure
fluid density
fluid speed
none
23. In cricket when a bowler produce reverse swing the ball will move towards
shinning side of the ball
rough side
seam of the ball
goes straight
24. Stokes law is applicable if body has ________shape
rough
square
circular
spherical
25. One torr is equal to
1.333 Nm-2
1333 Nm-2
13.33 Nm-2
133.3 Nm2
26. Systolic pressure is called
low blood pressure
high blood pressure
normal blood pressure
abnormal blood pressure
27. Instrument used to measure blood pressure is called
venturimeter
blood pressure
sphgmomanometer
sonometer
28. A chimney works works best if air exposed to the chimmey is
stationary
moving
moving slowly
moving fast
29. Which one is venturi relation ?
P1 - P2 = 1/2 ?V22
V2 = 2g (h1-h2)
P = 1 /2?V2 = ?gh = constant
A1 V1 = A2 V2 = constant
30. The effect of the decrease in pressure with the increase of the speed of fluid in a horizontal pipe is known as
Bernoullirt effect
Torricelli effect
Venturi effect
Stokes effect
31. Ideal fluid is
non-viscous
incompressible
steady flow
possess all properties
32. Laminar flow usually occurs at speeds.
low
high
very high
some time high and some time low
33. For _________ flow the path of the fluid particles cannot be tracked.
laminar
stream line
turbulent
both (a) and (b)
34. Sphygmomanometers measures blood pressure.
statically
dynamically
some time static and some time dynamic
none of these
35. Carburetor of a car is a application of
Venturi meter
Bernoulli equation
Both (a) and (b)
None
36. The blood flow is ____________ flow at disystolic pressure
laminar
turbulent
mixed
none
37. The profile of aeroplane wing which lifts it up is called as
wing shape
aerofoil profile
curved profile
none of these
38. Bernoullis equation is applicable for
laminar flow
turbulent flow
both laminar and turbulent flow
none of these
39. The density of human blood is nearly equal to
water
honey
mercury
oil (kerosene)
40. The speed of the fluid is maximum in the venturimeter at
convergent duct
divergent duct
throat
none of these
41. The normal blood pressure range for an human body is
120 to 80 torr
100 to 80 torr
120 to 60 torr
60 to 140 torr
42. Optical active crystals rotates the
vibrating plane
polarization plane
diffraction plane
interference plane
43. Which is not optically active?
sugar
tartaric acid
water
sodium chlorate
44. In double slit experiment we observe
interference fringes only
diffraction fringes only
both interference and diffraction fringes
polirized frringes
45. When light incident normally on thin film the path difference depends upon
thickness of the film only
nature of the film only
angle of indidence only
all thickness nature and angle of incidence
46. Which one of the following properties of light does not change with the nature of the medium?
velocity
wavelength
amplitude
frequency
47. Light reaches the earth form sun in nearly
15 minutes
10 minutes
8 minutes
8 minutes 30 seconds
48. Photoelectric effect was given by
Hertz
Fresnel
Einstein
Plank
49. According to Einstein light travels form one place to another in the form of
waves
particles
photons
it was not his discovery
50. Longitudinal waves do not exhibit
reflection
refraction
diffraction
polarization
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