Question

which statement is true about the part of the electromagnetic spectrum that human eyes can detect?
it is divided into seven ranges of wavelengths.
it contains only the colors of the rainbow and television waves.
it is divided into nine ranges of wavelengths.
it contains ultraviolet, visible, and infrared light.

Explanation:

The part of the electromagnetic spectrum detectable by human eyes is visible light, which is commonly divided into seven wavelength ranges corresponding to the colors of the rainbow (red, orange, yellow, green, blue, indigo, violet). Television waves are radio waves (not visible), ultraviolet and infrared light are invisible to humans, and visible light is not split into nine ranges.

Answer:

A. It is divided into seven ranges of wavelengths.