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ILLUMINATION QUIZ

Which among the following lamps has the maximum burning hours?

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Which cells in the eye are responsible for scotopic vision?

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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

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A 200 candle power lamp is hung 4 m above the centre of circular area of 5 m diameter. The illumination at centre of the area is

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Which lamps can be directly connected to a solar cell?

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Unit of luminous flux is

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What is the work of a driver in case of an LED?

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What will be the number of lamps, each having 300 lumens, required to obtain an average illuminance of 50 lux on a 4m × 3m rectangular room?

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Solid angle is expressed in terms of

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Candela is the unit of which?

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