No, two different light colors cannot have the same wavelength. The color of light is determined by its wavelength or frequency. Different colors of light correspond to different wavelengths within the electromagnetic spectrum.
The visible spectrum, which is the range of light wavelengths that humans can perceive, spans from approximately 400 nanometers (nm) for violet light to 700 nm for red light. Within this range, each color, such as blue, green, yellow, etc., corresponds to a specific range of wavelengths.
For example, blue light typically has a wavelength range of approximately 450-495 nm, while green light falls within the range of roughly 495-570 nm. These ranges of wavelengths are distinct for each color, and it is not possible for two different colors of light to have the exact same wavelength within the visible spectrum.
However, it is worth noting that there are other regions of the electromagnetic spectrum, such as ultraviolet (UV) and infrared (IR), where light exists with wavelengths outside the visible range. In these regions, different colors are associated with specific wavelengths, but they are not within the range of human perception.