Final answer:
The longest wavelengths of visible light correspond to the color red. Wavelengths longer than red are called infrared and are invisible to us.
The answer is not in the options.
Step-by-step explanation:
Visible light is a small portion of the electromagnetic spectrum, which ranges from gamma rays with the shortest wavelengths to radio waves with the longest wavelengths. The visible spectrum is the portion of the electromagnetic spectrum that is visible to the human eye. It ranges from approximately 380 nanometers (violet) to 740 nanometers (red). Beyond the red end of the visible spectrum, we have infrared radiation, which has longer wavelengths and is not visible to the human eye.
When white light passes through a prism, it separates into its component colors, creating a spectrum of colors ranging from violet to red. This phenomenon is known as dispersion. The colors in the visible spectrum have different wavelengths, with violet having the shortest wavelength and red having the longest.
The perception of color by the human eye is based on the different wavelengths of light. When light strikes an object, some wavelengths are absorbed and others are reflected. The reflected wavelengths enter the eye and are perceived as color. Red objects appear red because they reflect red light and absorb other wavelengths.
Infrared radiation, with wavelengths longer than those of visible light, is used in various applications such as remote controls, night vision devices, and thermal imaging cameras. While it is invisible to the human eye, it has important practical uses in technology and scientific research.
Understanding the properties of different wavelengths of light is crucial in various fields including physics, astronomy, optics, and technology. The ability to differentiate between various wavelengths and understand their characteristics allows for advancements in fields such as telecommunications, medical imaging, and environmental monitoring.
In summary, the longest wavelengths of visible light correspond to the color red, and wavelengths longer than red are called infrared and are invisible to us.
The answer is not in the options.