A high-energy photon collides with a neutral atom, causing it to become a positive ion.
Which statement describes what happens to the atom?
It gains an electron outside the nucleus.
It loses an electron from outside the nucleus.
It gains a proton inside the nucleus.
It loses a proton from inside the nucleus.
41 exam-style questions on OCR GCSE Physics Radioactive emissions. Each one has a worked solution and a mark scheme showing where the marks go.