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The intensity of light produced by an unknown source in terms of a standard source is measured by which instrument?
  • a)
    Anemometer
  • b)
    Ammeter
  • c)
    Photometer
  • d)
    Dynamometer
  • e)
    None of the above/More than one of the above
Correct answer is option 'C'. Can you explain this answer?
Most Upvoted Answer
The intensity of light produced by an unknown source in terms of a st...
Photometer
  • Photometer is used to measure the intensity of light produced by an unknown source in terms of a standard source.
  • It can be defined as an instrument that measures visible light.
  • It is an instrument that measures the strength of electromagnetic radiation in the range from ultraviolet to infrared and including the visible spectrum.
  • Most photometers convert light into an electric current using a photoresistor, photodiode, or photomultiplier.
Ammeter
  • Ammeter, instrument for measuring either direct or alternating electric current, in amperes.
  • An ammeter can measure a wide range of current values because at high values only a small portion of the current is directed through the meter mechanism; a shunt in parallel with the meter carries the major portion.
Anemometer-
  • An anemometer is a device used for measuring wind speed and direction.
  • It is also a common weather station instrument.
Dynamometer-
  • A device for measuring force, moment of force (torque), or power.
  • A dynamometer can also be used to determine the torque and power required to operate a driven machine such as a pump. In that case, a motoring or driving dynamometer is used.
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The intensity of light produced by an unknown source in terms of a standard source is measured by which instrument?a)Anemometerb)Ammeterc)Photometerd)Dynamometere)None of the above/More than one of the aboveCorrect answer is option 'C'. Can you explain this answer?
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