A student makes two statements about ionising radiation. Statement 1: It can kill cells and damage tissue. Statement 2: Every surviving cell exposed to it becomes cancerous. Which evaluation is correct?
Statement 1 is incorrect; statement 2 is correct because damaged tissue always survives.
Statement 1 is incorrect; statement 2 is incorrect because ionisation cannot alter DNA.
Statement 1 is correct; statement 2 is incorrect because cancer is a possible outcome.
Statement 1 is correct; statement 2 is correct because every ionisation causes cancer.
97 exam-style questions on Edexcel GCSE Physics 6.5 Uses and dangers of radioactivity, covering 6.5.1 Uses of radioactivity, 6.5.2 Dangers of ionising radiation and precautions, 6.5.3 Half-life and radiation dangers, 6.5.4 Safety precautions for radiation exposure, and 6.5.5 Contamination and irradiation. Each one has a worked solution and a mark scheme showing where the marks go.