Illumination The work of ballast in a fluorescent tube is to both ‘a’ and ‘b’. limit the flow of current. provide a kick start when voltage is induced. None of these. both ‘a’ and ‘b’. limit the flow of current. provide a kick start when voltage is induced. None of these. ANSWER DOWNLOAD EXAMIANS APP
Illumination Which cells in the eye are responsible for scotopic vision? None of these Cone cells Rod cells Both ‘a’ and ‘b’ None of these Cone cells Rod cells Both ‘a’ and ‘b’ ANSWER DOWNLOAD EXAMIANS APP
Illumination Wave length for red colour is around 400 nm. 700 nm. 600 nm. 500 nm. 400 nm. 700 nm. 600 nm. 500 nm. 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 1 / 3. 2 / 3. 2 / 5. 3 / 2. 1 / 3. 2 / 3. 2 / 5. 3 / 2. ANSWER DOWNLOAD EXAMIANS APP
Illumination Which among the following lamps has the maximum burning hours? Metal halide. Incandescent. Compact Fluorescent. LED. Metal halide. Incandescent. Compact Fluorescent. LED. ANSWER DOWNLOAD EXAMIANS APP
Illumination Which lamp has the best Colour Rendering Index (CRI)? Fluorescent Incandescent High pressure sodium vapour LED Fluorescent Incandescent High pressure sodium vapour LED ANSWER DOWNLOAD EXAMIANS APP
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