The visible light spectrum refers to the range of wavelengths that the human eye can perceive as light. This spectrum typically falls within the wavelength range of approximately 0.4 to 0.7 micrometers (400 to 700 nanometers).
This range includes all the colors of light that we can see, from violet (around 0.4 micrometers) through blue, green, yellow, and orange, to red (around 0.7 micrometers). This range is significant in various fields, including astronomy, photography, and environmental science, as it plays a crucial role in understanding how light interacts with objects and how images are formed and colored in natural settings.
The other choices represent wavelength ranges that do not correspond to the visible spectrum. For instance, wavelengths less than 0.4 micrometers are categorized as ultraviolet light, and wavelengths greater than 0.7 micrometers fall into the infrared range, both of which are not visible to the human eye.