MCQ Detailed View

Color televisions create images using the additive color mixing principle, where different colors of light are combined to produce a full spectrum of colors. The three primary colors of light used in TV screens are red, green, and blue (RGB).

Each TV screen is made up of tiny pixels, and every pixel has three sub-pixels corresponding to red, green, and blue light emitters. By adjusting the intensity of each of these three colors:

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  The TV can create millions of different color shades.

  
  


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  When all three are combined at full intensity, they produce white light.

  
  


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  Different levels of each color produce the entire visible spectrum used in images.

  
  

The human eye has three types of cone cells, each sensitive to red, green, or blue wavelengths. Color TVs use this biological principle to reproduce natural color vision by emitting only these three primary lights, which our brain interprets as full-color images.

The other options are incorrect:

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  Orange, black and violet: Black is not a color of light but the absence of it; this set cannot produce a full spectrum.

  
  


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  White, red and yellow: White is already a combination of all colors; this combination cannot create all shades.

  
  


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  Yellow, green and blue: Yellow is a secondary color (a mix of red and green), so it cannot serve as a primary light source for additive mixing.

  
  

Modern display technologies, including LED, LCD, and OLED TVs, all rely on the RGB color model. This principle is also used in computer monitors, digital cameras, and projectors, making red, green, and blue the fundamental light colors for electronic displays.

Thus, the correct answer is red, green, and blue, as these are the three additive primary colors used in TVs to produce all other colors of the visible spectrum.