11) The illumination of a surface is :
Answer is:
inversely proportional to the square of the distance from the source
Related Illumination MCQ - Electrician (Set-1) with Answers
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:
1500 lumens/sq. metre
Answer is: