What is the recommended illumination for general office work?: (A) 100 lux, (B) 400 lux, (C) 900 lux, (D) 1000 lux
Answer is B. The recommended illumination for casual reading is 100 lux, 400 lux for office work, 900 lux for fine assembly and for watch making 2000 - 3000 lux is recommended. Ref: Park's Textbook of Preventive Medicine, 17th Edition, Page 519.