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5.4 Uses and dangers of EM radiation

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Question 31

A technician tests two transmitters.

TransmitterWavelength
infrared1.5 × 10-6 m
microwave3.0 × 10-2 m

Take the speed of both signals to be 3.0 × 108 m/s.

Calculate the ratio of the frequency of the infrared signal to the frequency of the microwave signal.

[3]
Markscheme

5.4 Uses and dangers of EM radiation Questions

  1. GCSE
  2. /Physics
  3. /5.4 Uses and dangers of EM radiation

104 exam-style questions on Edexcel GCSE Physics 5.4 Uses and dangers of EM radiation, covering 5.4.1 Dangers of electromagnetic radiation, 5.4.2 Uses of electromagnetic radiation, 5.4.3 Radio waves and oscillations in circuits, and 5.4.4 Changes in atoms and nuclei generating radiation. Each one has a worked solution and a mark scheme showing where the marks go.

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