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Physics (AS & A Level) · May / June 2020 · Paper 11 · Question 26

9702Electromagnetic spectrum

What are the names of the electromagnetic waves that have wavelengths in a vacuum of 100 pm and of 100 µm?

  1. Aγ-rays; infrared
  2. Bγ-rays; red light
  3. CX-rays; infrared
  4. DX-rays; red light

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Correct answer: C. X-rays; infrared

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