Q. The colour output of a sodium vapour lamp is

A
White
B
Red
C
Yellow
D
Green
Solution:

Sodium vapor lamps emit yellow light. They are very efficient, and provide high-intensity light suitable for illuminating large, open areas. The table below shows the color produced by different vapour lamps.

Vapour lamp Colour
Chlorine Green
Nitrogen Red
Hydrogen Blue
Sodium Yellow
Neon Orange
Mercury White
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