Question

exam lesson name: light and sound
exam number: 700699rr
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▶ exam instructions
question 4 of 20 :
select the best answer for the question.

1. what three colors of light are used by digital devices to create colored images on a screen?

○ a. red, blue, and yellow
○ b. black, white, and cyan
○ c. cyan, magenta, and yellow
○ d. red, green, and blue
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Explanation:

Digital devices use the additive color mixing model for screens. The primary colors of light for creating colored images are red, green, and blue (RGB). Option A has red, blue, yellow (yellow is a primary for pigment, not light). Option B has black, white, cyan (not primary light colors). Option C has cyan, magenta, yellow (these are primary for pigments, like in printing). So the correct set for light on digital screens is red, green, blue.

Answer:

D. Red, green, and blue