10) The illumination at a point of a surface is the luminous-flux per unit area of the surface and its unit is :
Answer is:
lux
Related Illumination MCQ - Electrician (Set-1) with Answers
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:
1500 lumens/sq. metre
Answer is: