Question: with solution steps (a) A worker is filling out a form on a table illuminated by a light source directly overhead at a distance of

with solution steps (a) A worker is filling out a

with solution steps

(a) A worker is filling out a form on a table illuminated by a light source directly overhead at a distance of 0.5 meters. The light source is providing 360 lux at the surface of the table. The form (background) is white paper having 85% reflectance, and the worker is writing with black ink, which has a reflectance of 10%. The luminance of the form is: O 90 lux O 180 lux O 36 lux O 306 lux O 423.5 lux

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