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ECAT Physics QUESTION #740
Question 1
The range of wave number of light is 5 x 10^6 m⁻¹. Then its wavelength is:
  • 2 x 10^7 m
  • 2 x 10^-7 m✔️
  • 5 x 10^-8 m
  • None
Correct Answer Explanation
Wavelength λ = 1/wave number = 1/(5x10^6) = 2x10^-7 m.