JAMB - Physics (1984 - No. 33)
The spectrum of white light consists of coloured lights arranged in the following order
blue, red, green, yellow, indigo, violet, orange
red, orange, yellow, green, blue, indigo, violet
red, orange, yellow, indigo, green, blue, violet
indigo, green, blue, violet, yellow, red, orange
yellow, blue, green, violet, orange, indigo, red
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