Illumination Which cells in the eye are responsible for scotopic vision? None of these Rod cells Cone cells Both ‘a’ and ‘b’ None of these Rod cells Cone cells Both ‘a’ and ‘b’ ANSWER DOWNLOAD EXAMIANS APP
Illumination A 1000 W bulb fitted with a reflector illuminates an area of 3 m x 3 m with an average illumination of 450 lux. If the bulb has and efficiency of 9 lumens / watt the efficiency of the reflector is 45 %. 20 %. 70 %. 30 %. 45 %. 20 %. 70 %. 30 %. ANSWER DOWNLOAD EXAMIANS APP
Illumination Solid angle is expressed in terms of radians / meter. steredians. radians. degree. radians / meter. steredians. radians. degree. ANSWER DOWNLOAD EXAMIANS APP
Illumination Candela is the unit of which? Wavelength. Frequency. Luminous flux. Luminous intensity. Wavelength. Frequency. Luminous flux. Luminous intensity. 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 17.32 lux. 58.45 Kilolux. 1.53 lux. 1.15 lux. 17.32 lux. 58.45 Kilolux. 1.53 lux. 1.15 lux. 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
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