A material-processing system uses infrared radiation for heating and gamma radiation for sterilisation. A student makes two statements.
Statement P: Both processes transfer energy to the material. Statement Q: Both processes depend on the radiation causing mutations in cells.
Which assessment is correct?
P is incorrect; Q is correct because both processes require damage to cells.
P is correct; Q is incorrect because gamma sterilisation does not damage cells.
P is correct; Q is incorrect because infrared heating does not require mutations.
P is incorrect; Q is incorrect because neither process transfers energy to matter.
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.