Illumination MCQ - Electrician (Set-1) with Answers

Illumination MCQ - Electrician (Set-1) with Answers

6) Which of the following colour has wave length between blue and yellow ?

Answer is:

green

7) The study of illumination involves the :

Answer is:

designing of a lighting system

8) Energy radiated continuously in the from of light-waves is called :

Answer is:

luminous-flux

9) The luminous-flux emitted in unit solid angle by a light source having a luminous-intensity of one candela is called :

Answer is:

one lumen

10) The illumination at a point of a surface is the luminous-flux per unit area of the surface and its unit is :

Answer is:

lux