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Electromagnetic spectrum

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Question 139

What is the speed of radio waves in air?

A

3×108 mm/s3 \times 10^8 \text{ mm/s}3×108 mm/s

B

3×108 cm/s3 \times 10^8 \text{ cm/s}3×108 cm/s

C

3×108 m/s3 \times 10^8 \text{ m/s}3×108 m/s

D

3×108 km/s3 \times 10^8 \text{ km/s}3×108 km/s

Markscheme

Electromagnetic spectrum Questions

  1. IGCSE
  2. /Physics
  3. /Electromagnetic spectrum

198 exam-style questions on CIE IGCSE Physics Electromagnetic spectrum, covering Electromagnetic spectrum. Each one has a worked solution and a mark scheme showing where the marks go.

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