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 both A and B. None of these Lambert’s cosine law. law of square inverse. both A and B. None of these Lambert’s cosine law. law of square inverse. ANSWER DOWNLOAD EXAMIANS APP
Illumination The range of visual spectrum is 480nm - 760nm. 300nm - 760nm. 300nm - 1000nm. 480nm - 1000nm. 480nm - 760nm. 300nm - 760nm. 300nm - 1000nm. 480nm - 1000nm. ANSWER DOWNLOAD EXAMIANS APP
Illumination Luminous efficacy of a typical HPSV lamp is in between 10 - 40 lm/watt 40 - 70 lm/watt. 120 - 200 lm/watt. 70 - 120 lm/watt. 10 - 40 lm/watt 40 - 70 lm/watt. 120 - 200 lm/watt. 70 - 120 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 utilization factor. waste light factor. absorption factor. beam factor. utilization factor. waste light factor. absorption factor. beam factor. ANSWER DOWNLOAD EXAMIANS APP
Illumination The solid angle subtended by an area of 2400 cm2 on the surface of a sphere of diameter 1.2 m is 2 / 5. 3 / 2. 1 / 3. 2 / 3. 2 / 5. 3 / 2. 1 / 3. 2 / 3. ANSWER DOWNLOAD EXAMIANS APP
Illumination Total flux or lumens required in any lighting scheme depends inversely on utilization factor. None of these reduction factor. reflection factor. utilization factor. None of these reduction factor. reflection factor. ANSWER DOWNLOAD EXAMIANS APP
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