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Physics (AS & A Level) · May / June 2025 · Paper 14 · Question 23

9702Electromagnetic spectrum

Which row could describe electromagnetic waves?

  1. Atype of wave: longitudinal; speed in free space: faster for shorter wavelengths
  2. Btype of wave: longitudinal; speed in free space: the same for all wavelengths
  3. Ctype of wave: transverse; speed in free space: faster for shorter wavelengths
  4. Dtype of wave: transverse; speed in free space: the same for all wavelengths

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Correct answer: D. type of wave: transverse; speed in free space: the same for all wavelengths

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