Which colour of the light has the longest wavelength?

Which colour of the light has the longest wavelength?
  1. red
  2. blue
  3. green
  4. violet

Solution

Among the given lights, red coloured light has the longest wavelength.

As wavelength increases from V to R in VIBGYOR. So, red colour has the largest wavelength. It is reverse of frequency.Violet has the shortest wavelength.

Asked in: NEET 2019 (All India)

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