The rainbow is violet on the inside of its arc. What color is it on the outside?
blue
green
yellow
red
Visible light spans from red to violet. It is easy to remember, since wavelengths just outside the visible range are called infrared and ultraviolet.
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Answers by country
blue
green
yellow
red
answers
Ghana18
India544
Australia55
the United States692
Malaysia24
Unknown31
Republic of Ireland18
Canada41
Austria82
the United Kingdom226
Switzerland58
Pakistan43
the Netherlands33
Lebanon15
Germany538
the Philippines62
Poland18451
Greece30
South Africa27
Nigeria19