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Physics (AS & A Level) · Feb / March 2017 · Paper 12 · Question 26

9702Electromagnetic spectrum

M and N are two electromagnetic waves. The ratio (wavelength of M)/(wavelength of N) = 10⁵. What could M and N be?

  1. AM: microwaves, N: visible light
  2. BM: microwaves, N: γ-rays
  3. CM: γ-rays, N: microwaves
  4. DM: visible light, N: microwaves

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Correct answer: A. M: microwaves, N: visible light

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