Multiple choice general knowledge science & technology

Which colour of the rainbow has the longest wavelength?

  1. Red

  2. Yellow

  3. Green

  4. Violet
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A Correct answer
Explanation

In the visible spectrum, red light has the longest wavelength at approximately 700 nanometers, while violet has the shortest at around 400 nanometers. Wavelengths determine the color we perceive, with longer wavelengths appearing redder and shorter wavelengths appearing bluer.

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