What is the visible light wavelength range?

The visible light wavelength range is primarily defined as the spectrum of light that is detected by the human eye, which ranges from approximately 380 nanometers (nm) to 750 nm. The correct range encompasses the colors that we perceive, starting from violet, which has the shortest wavelengths, through blue, green, yellow, orange, and finally to red, which has the longest wavelengths within this spectrum.

The choice indicating a range from 500 nm to 800 nm includes longer wavelengths, adding infrared light that is not visible to the human eye. This range therefore inaccurately represents the visible spectrum, as it extends beyond the limits of what humans can see.

Options indicating ranges below 380 nm or above 750 nm fail to account for the full visible spectrum as perceived by humans, solidifying the understanding that the visible light typically ranges from about 380 nm to 750 nm.