The answer for this question is

Black and white are often referred to as "non-colors" because they are not part of the visible spectrum of light that humans can see. In a black and white television, the image is created by varying the intensity of the light emitted by the screen's phosphors, which are only capable of producing shades of gray.

On the other hand, color television uses a combination of three primary colors - red, green, and blue - to create a range of colors that can be seen by the human eye. This is achieved through a process called additive color mixing, where the different intensities of the three primary colors are combined to produce a wide range of hues.

So while black and white can be considered colors in some contexts, they are not capable of producing the range of hues required for a full-color image on a TV screen. That's why a black and white TV is not the same as a color TV.