A chimney works works best if air exposed to the chimmey is
1.stationary
2.moving
3.moving slowly
4.moving fast
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
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
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
At which angle the range of the projectile is maximum
1.45?
2.60?
3.30?
4.none
Bernoullis equation is applicable for
1.laminar flow
2.turbulent flow
3.both laminar and turbulent flow
4.none of these
Blood vessels are
1.rigid
2.not rigid
3.of glass
4.of rubber
Burnoullis equation is obtained by applying law of conservation of _
1.mass
2.energy
3.momentum
4.fluid
Carburetor of a car is a application of
1.Venturi meter
2.Bernoulli equation
3.Both (a) and (b)
4.None
Coefficient of viscosity of honey is greater than
1.milk
2.water
3.tarcoal
4.water
Concentration of red cells in blood is about
1.25%
2.40%
3.50%
4.75%
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
Equation of continuity is obtained by apply in law of conservation of
1.mass
2.energy
3.momentum
4.all
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
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
For _________ flow the path of the fluid particles cannot be tracked.
1.laminar
2.stream line
3.turbulent
4.both (a) and (b)
Ideal fluid is
1.non-viscous
2.incompressible
3.steady flow
4.possess all properties
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
In double slit experiment we observe
1.interference fringes only
2.diffraction fringes only
3.both interference and diffraction fringes
4.polirized frringes
Instrument used to measure blood pressure is called
1.venturimeter
2.blood pressure
3.sphgmomanometer
4.sonometer
Laminar flow usually occurs at speeds.
1.low
2.high
3.very high
4.some time high and some time low
Light reaches the earth form sun in nearly
1.15 minutes
2.10 minutes
3.8 minutes
4.8 minutes 30 seconds
Longitudinal waves do not exhibit
1.reflection
2.refraction
3.diffraction
4.polarization
One torr is equal to
1.1.333 Nm-2
2.1333 Nm-2
3.13.33 Nm-2
4.133.3 Nm2
Optical active crystals rotates the
1.vibrating plane
2.polarization plane
3.diffraction plane
4.interference plane
Photoelectric effect was given by
1.Hertz
2.Fresnel
3.Einstein
4.Plank
Speed of efflux can be determined by applying
1.Bernoulls theorem
2.Torricellis theorem
3.venture relation
4.all
Sphygmomanometers measures blood pressure.
1.statically
2.dynamically
3.some time static and some time dynamic
4.none of these
Stokes law is applicable if body has ________shape
1.rough
2.square
3.circular
4.spherical
Systolic pressure is called
1.low blood pressure
2.high blood pressure
3.normal blood pressure
4.abnormal blood pressure
The blood flow is ____________ flow at disystolic pressure
1.laminar
2.turbulent
3.mixed
4.none
The density of human blood is nearly equal to
1.water
2.honey
3.mercury
4.oil (kerosene)
The distance covered by a body in time t starting from rest is
1.at2/2
2.Vt
3.a2t/2
4.at2
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
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
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
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
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
The speed of the fluid is maximum in the venturimeter at
1.convergent duct
2.divergent duct
3.throat
4.none of these
The trajectory (or path) of a projectile is
1.straight line
2.parabola
3.hyperbola
4.circle
Time rate of change of momentum is equal to
1.force
2.impulse
3.velocity
4.both (a) and (c)
Two fog droplets have radius 2:3 their terminal velocities are
1.04:06
2.04:09
3.02:09
4.4.3
Velocity of fluid increases where the pressure is
1.low
2.high
3.constant
4.changes continuously
Venturi meter is used to measure
1.fluid pressure
2.fluid density
3.fluid speed
4.none
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
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
Which is not optically active?
1.sugar
2.tartaric acid
3.water
4.sodium chlorate
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
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
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