A lamp of 500cd power is suspended 2m from the ceiling and is located at the center of a room with an area of 20m x 10m and a height of 5m. Calculate the illumination in a point in the middle of a 10m wall at a height of 2m from the floor.
A lamp of 500cd power is suspended 2m from the ceiling and is located at the center of a room with an area of 20m x 10m and a height of 5m. Calculate the illumination in a point in the middle of a 10m wall at a height of 2m from the floor.
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Transcribed Image Text:A lamp of 500cd power is suspended 2m from the ceiling and is located at the center of a
room with an area of 20m x 10m and a height of 5m. Calculate the illumination in a point in
the middle of a 10m wall at a height of 2m from the floor.
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