AVIXA Project Technologies Group (PTG) Practice Exam 2025 – Your Comprehensive All-in-One Study Guide for Success!

Question: 1 / 400

What effect does low color temperature have on the appearance of light?

It appears blue

It appears yellow

It appears red

Low color temperature is associated with light that has a warmer, more yellow and reddish appearance. This is characteristic of sources like incandescent bulbs and candlelight, which typically have a color temperature below 3000 Kelvin. At these lower color temperatures, the light tends to emit wavelengths that the human eye perceives as warmer and more comfortable.

For example, a light source with a color temperature around 2700K emits more red and yellow wavelengths, which creates that cozy environment often favored in residential settings. This is in contrast to higher color temperatures, which are perceived as cooler, leaning toward the blue end of the spectrum.

In this context, the answer aligns well with the understanding that low color temperature results in light that appears more red, thus enhancing the perception of warmth in a space.

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It appears green

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