Which of these colours appears in a pure spectrum of visible light?*0/1A) BlackB) BrownC) WhiteD) Yellow

To determine which color appears in a pure spectrum of visible light, we must understand what a pure spectrum is. A pure spectrum of visible light consists of distinct colors that can be perceived by the human eye when light is dispersed, typically through a prism. These colors include red, orange, yellow, green, blue, indigo, and violet (often abbreviated as ROYGBIV).

1. Analysis of Options:

   • A) Black: Black is not a color in the visible spectrum; it is the absence of light.
   • B) Brown: Brown is not a pure spectral color; rather, it is a composite color created by mixing other colors.
   • C) White: White is not an individual color in the spectrum; it is the combination of all colors of light.
   • D) Yellow: Yellow is a color that appears in the visible spectrum and is one of the distinct colors produced when light is refracted.

2. Conclusion: Given this analysis, the color that appears in a pure spectrum of visible light from the options provided is:

Final Answer

D) Yellow