Dispersion of White Light Explained: What Color Would You See?

What is dispersion of white light?

The process of white light splitting into different colors is called dispersion of white light. When white light is passed through a glass prism or a refractive substance, it splits into its spectrum of colors (in order violet, indigo, blue, green, yellow, orange, and red) in the order of increasing wavelength. This process of white light splitting into its constituent colors is termed as dispersion.

Answer:

When looking at the filtered light, what color would a person see?

The person will see a violet color.

The filter is placed over a light bulb emitting white light, but the filter only allows light with the shortest wavelengths to pass through it. Since red color has the longest wavelength and violet has the shortest wavelength, the person will see a violet color when looking at the filtered light.