Illumination Wave length for red colour is around 400 nm. 600 nm. 700 nm. 500 nm. 400 nm. 600 nm. 700 nm. 500 nm. ANSWER DOWNLOAD EXAMIANS APP
Illumination Unit of luminous flux is candela. steradians. lumens. lux. candela. steradians. lumens. lux. ANSWER DOWNLOAD EXAMIANS APP
Illumination Which lamp has a negative Colour Rendering Index (CRI)? Low pressure sodium vapour Fluorescent High pressure sodium vapour LED Low pressure sodium vapour Fluorescent High pressure sodium vapour LED ANSWER DOWNLOAD EXAMIANS APP
Illumination The work of ballast in a fluorescent tube is to None of these. limit the flow of current. both ‘a’ and ‘b’. provide a kick start when voltage is induced. None of these. limit the flow of current. both ‘a’ and ‘b’. provide a kick start when voltage is induced. ANSWER DOWNLOAD EXAMIANS APP
Illumination What is the ratio of illuminance at a point 5m just below a lamp emitting 100 candelas and at a point 5m away from the first point on the same horizontal plane? 2√2 : 1 1:2 2:1 1: 2√2 2√2 : 1 1:2 2:1 1: 2√2 ANSWER DOWNLOAD EXAMIANS APP
Illumination Candela is the unit of which? Luminous flux. Luminous intensity. Wavelength. Frequency. Luminous flux. Luminous intensity. Wavelength. Frequency. ANSWER DOWNLOAD EXAMIANS APP
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