The unit of luminous flux is ________.

This question was previously asked in
UPRVUNL TG 2 (Electrician) Shift 1 Official Paper (Held on 17 July 2021)
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  1. Lux
  2. Lumen / watt
  3. Lumen 
  4. Candela

Answer (Detailed Solution Below)

Option 3 : Lumen 
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The correct answer is option 3):(Lumen )

Concept:

  • Luminous flux is the measure of the brightness of a light source in terms of energy being emitted.
  • In other words, it is the measure of the perceived power of light.
  • The S.I unit of Luminous Flux is Lumen.
  • Lux is the unit of illuminance.
  • Lamp efficiency is measured in lumen/watt
  • Candela unit of luminous intensity
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