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NEET2019PhysicsElectromagnetic WavesActual

Which colour of the light has the longest wavelength?

Options

  1. Ared
  2. Bblue
  3. Cgreen
  4. Dviolet

Correct answer

A. red

Step-by-step 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.

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