Which part of the visible light has the shortest wavelength?
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → Violet
The colours of visible light, in order of decreasing wavelength, are red, orange, yellow, green, blue, indigo and violet (VIBGYOR read backwards). Violet, at about 380–450 nm, has the shortest wavelength and the highest frequency; red, at about 620–750 nm, has the longest.