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 None of these law of square inverse. Lambert’s cosine law. both A and B. None of these law of square inverse. Lambert’s cosine law. both A and B. ANSWER DOWNLOAD EXAMIANS APP
Illumination Which among the following lamps has the maximum burning hours? Incandescent. Metal halide. LED. Compact Fluorescent. Incandescent. Metal halide. LED. Compact Fluorescent. ANSWER DOWNLOAD EXAMIANS APP
Illumination Luminous efficacy of a typical HPSV lamp is in between 40 - 70 lm/watt. 10 - 40 lm/watt 70 - 120 lm/watt. 120 - 200 lm/watt. 40 - 70 lm/watt. 10 - 40 lm/watt 70 - 120 lm/watt. 120 - 200 lm/watt. ANSWER DOWNLOAD EXAMIANS APP
Illumination In illumination technology total lumens emitted by source / total lumens available after waste of light is equal to waste light factor. beam factor. absorption factor. utilization factor. waste light factor. beam factor. absorption factor. utilization factor. ANSWER DOWNLOAD EXAMIANS APP
Illumination ___________________________ factor is defined as the ratio of the illumination when everything is clean to illumination under normal working conditions. Utilization. Depreciation. Absorption factor. Maintenance. Utilization. Depreciation. Absorption factor. Maintenance. ANSWER DOWNLOAD EXAMIANS APP
Illumination Which cells in the eye are responsible for scotopic vision? Rod cells Cone cells None of these Both ‘a’ and ‘b’ Rod cells Cone cells None of these Both ‘a’ and ‘b’ ANSWER DOWNLOAD EXAMIANS APP
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