Which region of the electromagnetic spectrum is visible to the human eye?

• A. Infrared
• B. Microwave
• C. Ultraviolet
• D. Visible light

Answer: (D)

Verified step by step guidance

1. Understand that the electromagnetic spectrum includes a range of wavelengths and frequencies, from very long wavelengths like radio waves to very short wavelengths like gamma rays.
2. Recall that the human eye can detect only a specific range of wavelengths within the electromagnetic spectrum, known as visible light.
3. Identify the approximate wavelength range of visible light, which is about 400 nm (nanometers) to 700 nm.
4. Compare this range to other regions of the spectrum: Infrared has longer wavelengths than visible light, microwaves have even longer wavelengths, and ultraviolet has shorter wavelengths than visible light.
5. Conclude that the region of the electromagnetic spectrum visible to the human eye is the visible light region, which lies between the ultraviolet and infrared regions.