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5.4 Uses and dangers of EM radiation

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Question 17

A clinic uses ultraviolet radiation to sterilise work surfaces and gamma radiation to sterilise sealed surgical instruments.

Which row correctly matches each type of radiation with a possible effect on body tissue?

[1]
A

ultraviolet: ionise molecules inside cells; gamma: damage only surface cells

B

ultraviolet: skin burns; gamma: internal heating without ionisation

C

ultraviolet: eye damage; gamma: heats water-rich tissue internally

D

ultraviolet: damage to surface cells and DNA; gamma: ionise molecules inside cells

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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