Which statement correctly describes infrared light?

• A. It is part of the electromagnetic spectrum with frequencies between microwaves and visible light
• B. It has frequencies higher than X-rays
• C. It is the same as visible light
• D. It is not part of the electromagnetic spectrum

Answer: (A)

Infrared light sits between microwaves and visible light on the electromagnetic spectrum. Its frequency is higher than microwaves but lower than visible light, meaning it has more energy than microwaves but less than visible light. This is why we can’t see infrared with our eyes, but we can sense it as heat. It is indeed part of the electromagnetic spectrum, not something separate or higher than X-rays, and it is not identical to visible light.