Lux is the SI unit of

1. 

Lux is the SI unit of
[A]. intensity of illumination
[B]. luminous efficiency
[C]. luminous flux
[D]. luminous intensity

Answer: Option A

Explanation:

The SI unit of intensity of illumination (illuminance) is the lux. An illuminance of 1.0 lux is produced by 1.0 lumen of light shining on an area of 1.0 m^2.

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