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Electromagnetic spectrum

Electromagnetic spectrum

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Question 20

A portable device is used to sterilize drinking water by destroying the DNA of bacteria and other microorganisms. Which type of electromagnetic wave does this device emit?

A

ultraviolet

B

infrared

C

radio waves

D

microwaves

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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