Illumination Multiple Choice Questions and Answers

16.  Glare is caused due to

   A.Excessive luminance

   B. Excessive lighting contrast in the field of vision

   C. Either A or B

   D.None of the above

17.  Glare is reduced by

   A. Increasing the mounting height of the lamp

   B. Using diffusers

   C. Using reflectors to cut off the light at certain angle

   D. All of the above

18.  Candle power is

   A. The luminous flux emitted by the source per unit solid angle

   B. The light radiating capacity of a source in a given direction

   C. Either A or B

   D. None of the above

19.  The Perfect diffuser surface is one that

   A. Transmits all the incident light

   B. Absorbs all the incident light

   C. Difuses all the incident light

   D. All of the above

   E.None of the above

20.  Luminous flux is

   A. The rate of energy radiation in the form of light waves

   B. The part of light energy radiated by sun that is received on earth

   C. Measured in lux

   D. All of the above

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