Near-infrared lies between visible light and mid-infrared on the spectrum.

• A. It lies between visible light and mid-infrared
• B. It lies beyond mid-infrared
• C. It lies within the ultraviolet range
• D. It is outside the infrared range

Answer: (A)

Near-infrared sits between visible light and mid-infrared on the electromagnetic spectrum because wavelengths increase as you move from visible into infrared. The visible range covers roughly 0.38 to 0.75 micrometers; near-infrared starts just beyond the visible end and typically spans about 0.75 to 2.5 micrometers (definitions vary). Following that, mid-infrared roughly covers about 2.5 to 25 micrometers. So near-infrared is the portion of infrared closest to visible light, occupying the gap between visible and mid-infrared. Ultraviolet has shorter wavelengths than visible, so it lies before visible, not between visible and mid-infrared. Far-infrared lies beyond mid-infrared, not between visible and mid-infrared.