9) The luminous-flux emitted in unit solid angle by a light source having a luminous-intensity of one candela is called :
Answer is:
one lumen
Related Illumination MCQ - Electrician (Set-1) with Answers
Answer is:
lux
Answer is:
inversely proportional to the square of the distance from the source
12) The illumination required for a workplace where fine work is performed will be in the order of :
Answer is:
1500 lumens/sq. metre
Answer is: