Q.

Lux is the SI unit of -

A. intensity of illumination
B. luminous efficiency
C. luminous flux
D. luminous intensity
Answer» A. intensity of illumination
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 m2.
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