Illumination Which cells in the eye are responsible for scotopic vision? Both ‘a’ and ‘b’ Cone cells Rod cells None of these Both ‘a’ and ‘b’ Cone cells Rod cells None of these 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 1.15 lux. 1.53 lux. 17.32 lux. 58.45 Kilolux. 1.15 lux. 1.53 lux. 17.32 lux. 58.45 Kilolux. ANSWER DOWNLOAD EXAMIANS APP
Illumination Candela is the unit of which? Frequency. Wavelength. Luminous intensity. Luminous flux. Frequency. Wavelength. Luminous intensity. Luminous flux. ANSWER DOWNLOAD EXAMIANS APP
Illumination The work of ballast in a fluorescent tube is to both ‘a’ and ‘b’. provide a kick start when voltage is induced. limit the flow of current. None of these. both ‘a’ and ‘b’. provide a kick start when voltage is induced. limit the flow of current. None of these. ANSWER DOWNLOAD EXAMIANS APP
Illumination Total flux or lumens required in any lighting scheme depends inversely on reflection factor. utilization factor. reduction factor. None of these reflection factor. utilization factor. reduction factor. None of these ANSWER DOWNLOAD EXAMIANS APP
Illumination What will be the total flux emitted by a source of 60 candle power? 0.001326 lumens. 754.2 lumens. 60 lumens. None of these. 0.001326 lumens. 754.2 lumens. 60 lumens. None of these. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS