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Physics (AS & A Level) · May / June 2017 · Paper 12 · Question 22

9702Progressive waves

The period of an electromagnetic wave is 1.0 ns. What are the frequency and wavelength of the wave?

  1. Afrequency 1.0 Hz, wavelength 3.0 × 10^8 m
  2. Bfrequency 1.0 × 10^6 Hz, wavelength 300 m
  3. Cfrequency 1.0 × 10^9 Hz, wavelength 0.30 m
  4. Dfrequency 1.0 × 10^12 Hz, wavelength 3.0 × 10^-4 m

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Correct answer: C. frequency 1.0 × 10^9 Hz, wavelength 0.30 m

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