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 Illumination can be expressed in lumens. radians. lux. candela. lumens. radians. lux. candela. 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 2 / 3. 2 / 5. 1 / 3. 3 / 2. 2 / 3. 2 / 5. 1 / 3. 3 / 2. ANSWER DOWNLOAD EXAMIANS APP
Illumination Luminous efficiency of a fluorescence lamp is 60 lumens / watt. 70 lumens / watt. 40 lumens / watt. 30 lumens / watt. 60 lumens / watt. 70 lumens / watt. 40 lumens / watt. 30 lumens / watt. ANSWER DOWNLOAD EXAMIANS APP
Illumination Candela is the unit of which? Luminous flux. Frequency. Wavelength. Luminous intensity. Luminous flux. Frequency. Wavelength. Luminous intensity. ANSWER DOWNLOAD EXAMIANS APP
Illumination Wave length for red colour is around 700 nm. 600 nm. 500 nm. 400 nm. 700 nm. 600 nm. 500 nm. 400 nm. ANSWER DOWNLOAD EXAMIANS APP
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