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Railways PYQCBT 2 2017

RRB NTPC · Question 72

Which among the below set of colours are generally known as the primary colours of light?

  1. White, Yellow, Blue

  2. Red, Green, Blue

  3. Red, Green, Black

  4. Black, White, Red

Show answer & explanation

Answer: (B) Red, Green, Blue

Explanation

The additive primary colours of light are red, green and blue (RGB); together they make white light.