Visible Light is found at wavelengths between 400-700 nm and is interpreted by the eye as color.

Visible Light is found at wavelengths between 400-700 nm and is interpreted by the eye as color.

• A. 1-10 nm
• B. 700-900 nm
• C. 400-700 nm
• D. 1000-2000 nm

Answer: (C)

Visible light is the part of the electromagnetic spectrum that the human eye can detect, roughly from 400 to 700 nanometers. Within this range, different wavelengths are perceived as colors because the eye’s photoreceptors respond to those specific wavelengths. Wavelengths shorter than about 400 nm fall into ultraviolet and aren’t visible, while wavelengths longer than about 700 nm fall into infrared and also aren’t seen as colors. The range 400-700 nm matches exactly what the eye can detect and interpret as color, making it the correct description. The other ranges lie outside the visible spectrum (far ultraviolet, near-infrared, or infrared) and would not be perceived as colors by the eye.

Visible light is the part of the electromagnetic spectrum that the human eye can detect, roughly from 400 to 700 nanometers. Within this range, different wavelengths are perceived as colors because the eye’s photoreceptors respond to those specific wavelengths. Wavelengths shorter than about 400 nm fall into ultraviolet and aren’t visible, while wavelengths longer than about 700 nm fall into infrared and also aren’t seen as colors. The range 400-700 nm matches exactly what the eye can detect and interpret as color, making it the correct description. The other ranges lie outside the visible spectrum (far ultraviolet, near-infrared, or infrared) and would not be perceived as colors by the eye.