Which of the following vapor gas will give yellow color in a filament lamp?

The color of the light depends on the gas in the tube. Neon lights were named for neon, a noble gas which gives off a popular orange light, but other gases and chemicals are used to produce other colors, such as hydrogen (red), helium (yellow), carbon dioxide (white), and mercury (blue).

Which of the following Vapour gas will give yellow Colour in a filament lamp?

(D) Magnesium-white. 57. Which of the, following vapors/gas will give yellow color in a filament lamp ? (D) Magnesium.

Which gas is sometimes used in filament lamps *?

Which gas is sometimes used in filament lamps ? (D) Carbon dioxide.

Which of the following lamp gives monochromatic light?

93. The lamp which gives nearly monochromatic light is. (a) sodium vapor lamp.

Which of the following phosphor produces the Green Colour?

Green: Combination of zinc sulfide with copper, the P31 phosphor or ZnS:Cu, provides green light peaking at 531 nm, with long glow.

When sodium Vapour lamp is switched on initially the Colour is?

The vapourized sodium ionizes and shines a nearly monochrome yellow. LPS lamps have been used widely for street lighting since the 1930s because of their efficiency (measured in lumens per watt) and the ability of their yellow light to penetrate fog.

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When a sodium vapor lamp is switched on the color is?

When the lamp is first started, it emits a dim red/pink light to warm the sodium metal; within a few minutes as the sodium metal vaporizes, the emission becomes the common bright yellow.

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