Illumination The illumination of the surface varies directly with cosine of the angle between normal to surface and direction of the inclined light is given by Lambert’s cosine law. None of these law of square inverse. both A and B. Lambert’s cosine law. None of these law of square inverse. both A and B. ANSWER DOWNLOAD EXAMIANS APP
Illumination The illumination at a point 5 meters below a lamp in 6 lux. The candle power of the lamp is 200. 150. 140. 30 200. 150. 140. 30 ANSWER DOWNLOAD EXAMIANS APP
Illumination Which lamps can be directly connected to a solar cell? Compact Fluorescent LED Metal Halide Incandescent Compact Fluorescent LED Metal Halide Incandescent ANSWER DOWNLOAD EXAMIANS APP
Illumination A 1000 W bulb fitted with a reflector illuminates an area of 3 m x 3 m with an average illumination of 450 lux. If the bulb has and efficiency of 9 lumens / watt the efficiency of the reflector is 20 %. 45 %. 70 %. 30 %. 20 %. 45 %. 70 %. 30 %. ANSWER DOWNLOAD EXAMIANS APP
Illumination Illumination can be expressed in lumens. candela. radians. lux. lumens. candela. radians. lux. ANSWER DOWNLOAD EXAMIANS APP
Illumination A 200 candle power lamp is hung 4 m above the centre of circular area of 5 m diameter. The illumination at centre of the area is 13.5 lux. 17.5 lux. 12.5 lux. 18.5 lux. 13.5 lux. 17.5 lux. 12.5 lux. 18.5 lux. ANSWER DOWNLOAD EXAMIANS APP
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