Which of the following wavelengths of light is in the infrared region of the radiant energy spectrum?

Name: Which of the following wavelengths of light is in the infrared region of the radiant energy spectrum?
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Question

Quizplus · Accepted Answer

The infrared region of the radiant energy spectrum is typically defined as the portion between 750 nm to 1 millimeter, which includes a portion of the visible spectrum as well. 780 nm falls within this range and is the best choice. The other options are not in the infrared region.

Which of the Following Wavelengths of Light Is in the Infrared