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Illumination

Illumination
Wave length for red colour is around

 600 nm.
 700 nm.
 500 nm.
 400 nm.

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Illumination
The range of visual spectrum is

 300nm - 760nm.
 300nm - 1000nm.
 480nm - 1000nm.
 480nm - 760nm.

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Illumination
Candela/metre square is the unit of which photometric quantity?

 Luminous flux
 Illuminance
 Luminance
 Luminous Intensity

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Illumination
Candela is the unit of which?

 Luminous flux.
 Wavelength.
 Frequency.
 Luminous intensity.

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Illumination
Luminous efficacy of a typical HPSV lamp is in between

 40 - 70 lm/watt.
 120 - 200 lm/watt.
 70 - 120 lm/watt.
 10 - 40 lm/watt

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Illumination
___________________________ factor is defined as the ratio of the illumination when everything is clean to illumination under normal working conditions.

  Depreciation.
  Utilization.
  Maintenance.
  Absorption factor.

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MORE MCQ ON Illumination

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