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For precision work the illumination 'level required is of the order of | |
A. | Â 500-1000 lumens/m2 [Correct Answer] |
B. | 200-400 lumens/m2 [Wrong Answer] |
C. | ÂÂ 50-100 lumens/m2 [Wrong Answer] |
D. | 10-25 lumens/m2 [Wrong Answer] |