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      Question

      SI unit of luminous intensity is   

      .
      A lumen Correct Answer Incorrect Answer
      B lux Correct Answer Incorrect Answer
      C candela Correct Answer Incorrect Answer
      D watt Correct Answer Incorrect Answer

      Solution

      Luminous intensity is a measure of the wavelength-weighted power emitted bya light source in a particular direction per unit solid angle, based on the luminosity function, a standardized model of the sensitivity of the human eye. The SI unit of luminous intensity is the candela (cd).

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