ITPEC IP April 2026 Question 25

White — equal full-intensity red, green, and blue light combine additively to produce white.

Displays emit light, so their RGB primaries use additive mixing. Red plus green gives yellow, green plus blue gives cyan, and blue plus red gives magenta; adding all three equally yields a neutral color, with maximum equal intensity appearing white.

Answer (c)

Why not others: (a) would mainly combine red and blue; (b) is red plus green without blue; (d) is not an RGB additive primary combination.

Key rule: Additive RGB starts at black and becomes brighter as light is added; equal maximum R, G, and B produces white.

AI-generated — may contain errors