Which of the following colours has the maximum wavelength?

The color with the maximum wavelength is red (Option D). In the visible light spectrum, red light has the longest wavelength, typically ranging from around 620 to 750 nanometers. This longer wavelength means that red light has lower energy and a lower frequency compared to other colors like blue, green, and yellow. Because of its long wavelength, red light refracts or bends the least when passing through mediums such as prisms or water droplets, which is why it appears on the outer edge of a spectrum or rainbow. The long wavelength of red light also contributes to its use in various applications, such as in stop signs and traffic lights, because it can be seen from a distance. Understanding the wavelengths of different colors is essential in fields like optics, astronomy, and photography, as it affects how light interacts with materials and how we perceive color.