EXAMIANS
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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What will be the total flux emitted by a source of 60 candle power?
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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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The solid angle subtended by an area of 2400 cm2 on the surface of a sphere of diameter 1.2 m is
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Which among the following lamps has the maximum burning hours?
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Which lamp has a negative Colour Rendering Index (CRI)?
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Which cells in the eye are responsible for scotopic vision?
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Candela/metre square is the unit of which photometric quantity?
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What is the ratio of illuminance at a point 5m just below a lamp emitting 100 candelas and at a point 5m away from the first point on the same horizontal plane?
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