EXAMIANS
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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What is the work of a driver in case of an LED?
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Which lamps can be directly connected to a solar cell?
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The illumination at a point 5 meters below a lamp in 6 lux. The candle power of the lamp is
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Which lamp has the best Colour Rendering Index (CRI)?
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Candela is the unit of which?
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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
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Which among the following lamps has the maximum burning hours?
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Candela/metre square is the unit of which photometric quantity?
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What will be the total flux emitted by a source of 60 candle power?
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