The illumination level of a room is 300 lux and the efficacy of the lamps is 60. The Light Power Density (LPD) of the room in Watt/m2 is
Q. The illumination level of a room is 300 lux and the efficacy of the lamps is 60. The Light Power Density (LPD) of the room in Watt/m2 is________ . A. 1 B. 5 C. 7 D. 11 Ans: 5 Explanation: Illumination Level of the room = 300 lux = 300 lumen/sq m Efficacy of […]










