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. law of square inverse. None of these Lambert’s cosine law. both A and B. law of square inverse. None of these Lambert’s cosine law. ANSWER DOWNLOAD EXAMIANS APP
Illumination Candela/metre square is the unit of which photometric quantity? Luminance Luminous Intensity Illuminance Luminous flux Luminance Luminous Intensity Illuminance Luminous flux ANSWER DOWNLOAD EXAMIANS APP
Illumination Wave length for red colour is around 600 nm. 700 nm. 400 nm. 500 nm. 600 nm. 700 nm. 400 nm. 500 nm. ANSWER DOWNLOAD EXAMIANS APP
Illumination Which lamp has a negative Colour Rendering Index (CRI)? Fluorescent High pressure sodium vapour Low pressure sodium vapour LED Fluorescent High pressure sodium vapour Low pressure sodium vapour LED ANSWER DOWNLOAD EXAMIANS APP
Illumination Solid angle is expressed in terms of radians. degree. steredians. radians / meter. radians. degree. steredians. radians / meter. ANSWER DOWNLOAD EXAMIANS APP
Illumination Luminous efficacy of a typical HPSV lamp is in between 40 - 70 lm/watt. 10 - 40 lm/watt 120 - 200 lm/watt. 70 - 120 lm/watt. 40 - 70 lm/watt. 10 - 40 lm/watt 120 - 200 lm/watt. 70 - 120 lm/watt. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS