Light with a wavelength of 700 nm is which color?

• A. Green
• B. Blue
• C. Violet
• D. Red

Answer: (D)

Verified step by step guidance

1. Understand that visible light is characterized by its wavelength, which determines its color.
2. Recall the approximate wavelength ranges for visible colors: Violet (~380-450 nm), Blue (~450-495 nm), Green (~495-570 nm), Yellow (~570-590 nm), Orange (~590-620 nm), and Red (~620-750 nm).
3. Compare the given wavelength of 700 nm to these ranges to identify the corresponding color.
4. Since 700 nm falls within the range of about 620-750 nm, it corresponds to the color red.
5. Therefore, light with a wavelength of 700 nm is red in color.