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11. Graphometer is used to meausre _____________ and Planometer is used to measure :
  A.  speed, velocity
  B.  angles, area
  C.  angle, speed
  D.  velocity, area
     
   
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52. Taximeter is used to measure:
  A.  distance travelled
  B.  displacement
  C.  Both A & B
  D.  None of these
     
   
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53. Inclinometer is used to measure:
  A.  direction of inclined object
  B.  momentum of falling object
  C.  speed of downfall
  D.  angle of a slope
     
   
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54. Glucometer is used to measure:
  A.  Blood glucose
  B.  sweetness of fruits
  C.  sweetness in eatables
  D.  viscosity of blood
     
   
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55. Radiometer is used to measure:
  A.  intensity of electromagnetic radiation
  B.  wavelength of Radio Waves
  C.  radiant flux of electromagnetic radiation
  D.  frequency of Radio waves
     
   
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56. Tachometer is used to measure:
  A.  revolution per minute
  B.  rate of blood flow
  C.  speed of aeroplanes
  D.  All of the above
     
   
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57. Which insturment is used to measure high temperatures?
  A.  Pedometer
  B.  Pyrometer
  C.  Spectrometer
  D.  Cryometer
     
   
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58. Which one of the following instruement is used to measure the heating power of sunlight?
  A.  Nephetometer
  B.  Infrared thermometer
  C.  Actinometer
  D.  Machmeter
     
   
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59. Lux meter is used to measure:
  A.  intensity of light
  B.  density of electrons and protons
  C.  force between electrons, protons and neutrons
  D.  scattering capacity of light
     
   
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60. Nephoscope is used to measure:
  A.  Detect object above clouds
  B.  to measure the speed and direction of clouds
  C.  intensity of lightning
  D.  density of cloud
     
   
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