Which one among the following has the highest energy?

1. Blue light
2. Green light
3. Red light
4. Yellow light

Explanation

Option (a) is correct

• The wavelengths of visible light are:
  • Violet: 380–450 nm (688–789 THz frequency)
  • Blue: 450–495 nm
  • Green: 495–570 nm
  • Yellow: 570–590 nm
  • Orange: 590–620 nm
  • Red: 620–750 nm (400–484 THz frequency)

Answer: (a) Blue Light