Illumination The range of visual spectrum is 480nm - 1000nm. 480nm - 760nm. 300nm - 1000nm. 300nm - 760nm. 480nm - 1000nm. 480nm - 760nm. 300nm - 1000nm. 300nm - 760nm. ANSWER DOWNLOAD EXAMIANS APP
Illumination What is the work of a driver in case of an LED? To convert DC to AC None of these Both ‘a’ and ‘b’ To convert AC to DC To convert DC to AC None of these Both ‘a’ and ‘b’ To convert AC to DC ANSWER DOWNLOAD EXAMIANS APP
Illumination From a uniform light source having luminous intensity of 300 candelas, there exists a plane surface 15 m below. The value of illuminance at a point on the plane surface where the luminous flux rays are inclined at an angle of 30 to the surface is 58.45 Kilolux. 17.32 lux. 1.15 lux. 1.53 lux. 58.45 Kilolux. 17.32 lux. 1.15 lux. 1.53 lux. ANSWER DOWNLOAD EXAMIANS APP
Illumination Which lamps can be directly connected to a solar cell? Compact Fluorescent LED Incandescent Metal Halide Compact Fluorescent LED Incandescent Metal Halide ANSWER DOWNLOAD EXAMIANS APP
Illumination Candela/metre square is the unit of which photometric quantity? Illuminance Luminous flux Luminous Intensity Luminance Illuminance Luminous flux Luminous Intensity Luminance ANSWER DOWNLOAD EXAMIANS APP
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. law of square inverse. both A and B. None of these Lambert’s cosine law. law of square inverse. both A and B. None of these ANSWER DOWNLOAD EXAMIANS APP
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