1) Concentration of red cells in blood is about a. 25% b. 40% c. 50% d. 75%
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2) A man standing near a fast moving train may fall a. on the train b. away from the train c. towards the train d. on himself
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3) Two fog droplets have radius 2:3 their terminal velocities are a. 4:06 b. 4:09 c. 2:09 d. 4.3
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4) Burnoullis equation is obtained by applying law of conservation of a. mass b. energy c. momentum d. fluid
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5) Venturi meter is used to measure a. fluid pressure b. fluid density c. fluid speed d. none
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6) In cricket when a bowler produce reverse swing the ball will move towards a. shinning side of the ball b. rough side c. seam of the ball d. goes straight
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7) Stokes law is applicable if body has ________shape a. rough b. square c. circular d. spherical
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8) One torr is equal to a. 1.333 Nm-2 b. .1333 Nm-2 c. 13.33 Nm-2 d. 133.3 Nm2
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9) Systolic pressure is called a. low blood pressure b. high blood pressure c. normal blood pressure d. abnormal blood pressure
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10) Instrument used to measure blood pressure is called a. venturimeter b. blood pressure c. sphgmomanometer d. sonometer
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11) A chimney works works best if air exposed to the chimmey is a. stationary b. moving c. moving slowly d. moving fast
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12) The effect of the decrease in pressure with the increase of the speed of fluid in a horizontal pipe is known as a. Bernoullirt effect b. Torricelli effect c. Venturi effect d. Stokes effect
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13) Ideal fluid is a. non-viscous b. incompressible c. steady flow d. possess all properties
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14) Laminar flow usually occurs at speeds. a. low b. high c. very high d. some time high and some time low
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15) For _________ flow the path of the fluid particles cannot be tracked. a. laminar b. stream line c. turbulent d. both (a) and (b)
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16) Sphygmomanometers measures blood pressure. a. statically b. dynamically c. some time static and some time dynamic d. none of these
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17) Carburetor of a car is a application of a. Venturi meter b. Bernoulli equation c. Both (a) and (b) d. None
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18) The blood flow is ____________ flow at disystolic pressure a. laminar b. turbulent c. mixed d. none
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19) The profile of aeroplane wing which lifts it up is called as a. wing shape b. aerofoil profile c. curved profile d. none of these
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20) Bernoullis equation is applicable for a. laminar flow b. turbulent flow c. both laminar and turbulent flow d. none of these
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21) The density of human blood is nearly equal to a. water b. honey c. mercury d. oil (kerosene)
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22) The speed of the fluid is maximum in the venturimeter at a. convergent duct b. divergent duct c. throat d. none of these
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23) The normal blood pressure range for an human body is a. 120 to 80 torr b. 100 to 80 torr c. 120 to 60 torr d. 60 to 140 torr
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24) Optical active crystals rotates the a. vibrating plane b. polarization plane c. diffraction plane d. interference plane
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25) Which is not optically active? a. sugar b. tartaric acid c. water d. sodium chlorate
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26) In double slit experiment we observe a. interference fringes only b. diffraction fringes only c. both interference and diffraction fringes d. polirized frringes
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27) When light incident normally on thin film the path difference depends upon a. thickness of the film only b. nature of the film only c. angle of indidence only d. all thickness nature and angle of incidence
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28) Which one of the following properties of light does not change with the nature of the medium? a. velocity b. wavelength c. amplitude d. frequency
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29) Light reaches the earth form sun in nearly a. 15 minutes b. 10 minutes c. 8 minutes d. 8 minutes 30 seconds
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30) Photoelectric effect was given by a. Hertz b. Fresnel c. Einstein d. Plank
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31) According to Einstein light travels form one place to another in the form of a. waves b. particles c. photons d. it was not his discovery
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32) Longitudinal waves do not exhibit a. reflection b. refraction c. diffraction d. polarization
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33) Central spot of Newtons rings a. bright b. dark for large wavelength c. dark d. bright for large wavelength
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34) A point source of light placed in a homogeneous medium gives rise to a. a cylindrical wave front b. an elliptical wave front c. a spherical wave front d. a plane wave front
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35) The locus of all points in a medium having the same phase of vibration is called a. crest b. trough c. wavelength d. wave front
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36) Two sources of light are coherent if they emit rays of a. same wavelength b. same amplitude of vibration c. same wave length with constant phase difference d. same amplitude and wavelength
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37) When crest of one wave falls over the trough of the other wave this phenomenon is known as a. polarization b. constructive interference c. destructive interference d. diffraction
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38) In Young double slit experiment, if white light is used a. alternate dark and bright fringes will be seen b. coloured fringes will be seen c. no interference fringes will be seen d. impossible to predict
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39) The velocity of light was determined accurately by a. Newton b. Michelson c. Huygen d. Young
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40) In an interference pattern a. bright fringes are wider than dark fringes b. dark fringes are wider than bright fringe c. both dark and bright fringes are of equal width d. central fringes are brighter than the outer fringes
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